Attachment 83705 Details for Bug 67813 – dmesg with c tool

dmesg with c tool

netconsole_hsw24_0806.txt (text/plain), 1.24 MB, created by lu hua on 2013-08-06 08:53:52 UTC

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Description:

Filename:

MIME Type:

Creator: lu hua

Created: 2013-08-06 08:53:52 UTC

Size: 1.24 MB

patch

obsolete

>[  445.773174] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.773180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.773184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.773260] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.773467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.773573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.773658] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.773801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.773890] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.773976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.774064] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.774210] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.774294] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.774571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.774717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.774858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.774944] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.775076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.775164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.775250] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.775332] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.775604] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.775781] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.775948] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.776129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.776302] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.776453] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.776570] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.776684] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.776862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.776955] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.777145] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.777304] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.777395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.777571] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.777660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.777767] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.777876] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.777981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.778098] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.778262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.778429] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.778550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.778714] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.778882] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.779043] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.779211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.779315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.779421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.779525] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.779621] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.779812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.779971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.780062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.780172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.780354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.780467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.780583] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.780691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.780798] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.780906] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.780994] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.781219] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.781404] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.781574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.781743] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.781913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.781997] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.782110] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.782224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.782331] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.782439] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.782557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.782647] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.782808] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.782997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.783170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.783353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.783537] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.783719] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.783909] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.784063] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.784149] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.784313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.784425] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.784595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.784681] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.784789] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.784979] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.785086] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.785269] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.785438] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.785601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.785759] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.785920] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.786083] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.786247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.786363] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.786527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.786642] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.786805] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.786924] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.787010] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.787194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.787276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.787473] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.787639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.787752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.787859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.787943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.788052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.788132] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.788368] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.788481] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.788650] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.788761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.788848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.788956] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.789115] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.789279] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.789465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.791599] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.791712] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.791819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.791930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.792103] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.792190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.792353] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.792438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.792522] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.792662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.792809] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.792893] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.792975] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.793119] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.793206] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.793350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.793495] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.793630] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.793774] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.793912] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.794072] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.794266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.794377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.794459] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.794652] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.794742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.794855] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.795047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.795209] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.795303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.795408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.795514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.795626] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.795805] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.795966] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.796070] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.796159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.796262] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.796425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.796538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.796617] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.796730] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.796889] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.797060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.797164] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.797323] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.797441] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.797625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.797708] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.797813] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.797896] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.798082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.798269] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.798377] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.798538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.798619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.798732] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.798846] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.799037] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.799209] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.799317] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.799425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.799532] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.799620] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.799792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.799980] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.800059] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.800244] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.800415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.800570] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.800764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.800927] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.801103] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.801266] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.801456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.801563] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.801672] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.801838] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.802005] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.802164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.802275] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.802392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.802499] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.802611] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.802775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.802880] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.803051] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.803137] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.803326] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.803435] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.803602] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.803759] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.803914] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.804019] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.804180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.804292] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.804445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.804557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.804662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.804826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.804990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.805164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.805269] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.805457] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.805629] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.805737] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.805821] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.806006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.806107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.806275] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.806386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.806466] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.806576] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.806688] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.806795] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.806958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.807060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.807147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.807253] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.807455] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.807537] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.807702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.809798] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.810002] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.810167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.810280] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.810438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.810540] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.810624] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.810702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.810781] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.810864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.811015] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.811157] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.811240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.811323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.811464] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.811613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.811756] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.811832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.811912] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.811992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.812077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.812166] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.812271] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.812434] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.812518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.812634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.812743] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.812855] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.813015] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.813199] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.813303] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.813474] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.813639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.813749] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.813941] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.814104] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.814275] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.814446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.814559] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.814728] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.814911] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.815017] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.815119] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.815203] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.815390] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.815574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.815676] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.815836] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.816006] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.816171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.816277] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.816444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.816550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.816632] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.816738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.816824] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.816984] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.817087] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.817251] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.817419] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.817528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.817631] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.817795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.817980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.818149] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.818235] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.818423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.818510] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.818625] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.818791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.818880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.818980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.819135] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.819329] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.819513] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.819687] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.819851] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.820014] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.820176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.820285] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.820472] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.820553] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.820715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.820820] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.820929] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.821101] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.821263] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.821378] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.821487] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.821673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.821785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.821877] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.821983] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.822150] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.822316] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.822481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.822569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.822684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.822793] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.822879] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.823073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.823162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.823268] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.823446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.823549] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.823658] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.823815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.823917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.824004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.824180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.824295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.824376] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.824564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.824672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.824779] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.824944] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.825106] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.825192] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.825371] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.825555] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.825717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.827831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.828023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.828113] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.828212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.828374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.828470] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.828584] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.828729] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.828868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.829013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.829160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.829243] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.829380] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.829462] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.829551] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.829631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.829716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.829798] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.829881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.829960] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.830110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.830260] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.830419] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.830536] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.830706] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.830869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.830972] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.831141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.831304] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.831461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.831568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.831651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.831843] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.832007] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.832190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.832366] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.832554] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.832833] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.832915] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.833078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.833191] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.833350] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.833463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.833558] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.833658] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.833764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.833937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.834041] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.834125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.834233] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.834325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.834433] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.834546] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.834656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.834760] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.834924] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.835009] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.835111] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.835202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.835308] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.835474] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.835655] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.835746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.835849] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.836024] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.836211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.836322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.836431] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.836545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.836631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.836742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.836928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.837089] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.837201] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.837388] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.837498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.837614] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.837783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.837890] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.838003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.838192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.838278] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.838386] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.838554] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.838667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.838774] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.838867] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.839027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.839135] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.839318] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.839523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.839636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.839722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.839887] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.840074] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.840157] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.840346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.840450] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.840623] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.840728] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.840832] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.841007] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.841109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.841215] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.841297] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.841492] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.841658] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.841818] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.842004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.842167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.842246] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.842432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.842539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.842624] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.842785] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.842963] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.843127] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.843235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.843315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.843421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.843529] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.843641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.843730] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.843845] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.844029] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.844196] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.846241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.846351] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.846460] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.846578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.846687] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.846850] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.847022] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.847165] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.847251] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.847392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.847478] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.847569] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.847711] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.847860] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.847947] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.848035] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.848174] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.848315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.848401] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.848551] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.848688] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.848874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.848981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.849148] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.849312] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.849419] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.849580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.849754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.849856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.850035] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.850211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.850303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.850403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.850574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.850689] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.850782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.850942] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.851049] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.851226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.851335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.851423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.851531] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.851636] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.851803] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.851968] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.852073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.852180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.852349] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.852431] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.852544] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.852653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.852734] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.852900] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.853088] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.853190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.853276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.853462] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.853631] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.853827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.853904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.854015] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.854199] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.854307] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.854416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.854497] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.854611] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.854775] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.854960] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.855130] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.855238] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.855396] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.855579] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.855745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.855841] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.855945] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.856054] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.856207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.856313] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.856488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.856590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.856698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.856802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.856886] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.857076] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.857244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.857357] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.857518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.857623] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.857783] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.857953] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.858052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.858161] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.858326] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.858416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.858523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.858645] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.858755] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.858859] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.859018] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.859125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.859206] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.859312] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.859502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.859622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.859733] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.859896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.860068] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.860225] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.860324] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.860435] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.860614] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.860769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.860880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.860992] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.861148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.861258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.861446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.861553] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.861664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.861740] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.861848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.861952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.862060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.862173] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.862261] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.862364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.862485] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.864611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.864723] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.864913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.865021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.865123] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.865233] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.865345] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.865482] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.865628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.865713] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.865859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.865946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.866031] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.866176] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.866314] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.866445] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.866583] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.866728] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.866864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.866949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.867035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.867146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.867251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.867362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.867535] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.867638] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.867744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.867854] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.867947] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.868109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.868321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.868507] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.868676] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.868778] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.868949] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.869116] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.869229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.869308] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.869480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.869649] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.869831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.869933] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.870111] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.870221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.870328] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.870505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.870618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.870722] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.870835] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.870945] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.871052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.871163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.871329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.871415] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.871527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.871688] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.871794] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.871963] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.872074] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.872183] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.872265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.872370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.872545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.872648] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.872823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.872933] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.873042] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.873142] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.873225] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.873343] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.873533] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.873641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.873752] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.873907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.874011] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.874120] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.874232] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.874337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.874418] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.874523] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.874677] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.874872] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.875024] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.875212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.875377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.875488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.875575] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.875691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.875797] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.875909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.876012] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.876126] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.876235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.876344] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.876508] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.876671] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.876783] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.876974] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.877169] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.877340] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.877506] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.877667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.877769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.877876] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.878045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.878135] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.878314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.878416] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.878601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.878779] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.878892] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.879069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.879169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.879263] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.879374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.879461] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.879640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.879721] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.879884] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.879993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.880163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.880326] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.880429] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.880539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.880643] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.880819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.880933] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.881101] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.881207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.883355] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.883533] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.883694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.883806] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.883967] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.884071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.884218] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.884304] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.884443] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.884531] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.884611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.884695] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.884833] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.884981] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.885118] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.885264] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.885408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.885488] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.885631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.885711] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.885828] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.885993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.886077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.886180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.886355] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.886467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.886582] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.886687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.886791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.886874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.887062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.887168] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.887271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.887356] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.887523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.887639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.887726] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.887889] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.888060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.888164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.888272] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.888386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.888493] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.888600] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.888690] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.888792] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.888900] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.889010] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.889104] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.889286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.889392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.889503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.889685] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.889770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.889874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.889982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.890174] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.890334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.890446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.890556] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.890638] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.890750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.890832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.890938] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.891047] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.891157] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.891255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.891369] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.891476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.891580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.891774] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.891888] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.892054] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.892237] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.892395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.892503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.892682] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.892786] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.892889] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.892989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.893087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.893197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.893303] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.893495] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.893614] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.893775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.893889] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.894075] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.894180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.894286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.894403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.894574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.894675] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.894844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.895009] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.895117] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.895277] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.895440] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.895634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.895744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.895854] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.895959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.896069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.896186] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.896346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.896455] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.896539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.896658] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.896815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.896920] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.897109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.897221] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.897380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.897553] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.897664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.897747] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.897852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.897951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.898039] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.898194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.898306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.898470] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.898578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.898689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.898865] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.899030] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.899222] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.899329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.899439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.899605] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.899771] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.901974] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.902058] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.902257] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.902423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.902534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.902620] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.902776] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.902918] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.902996] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.903078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.903162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.903246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.903333] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.903481] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.903623] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.903705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.903782] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.903864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.903950] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.904101] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.904242] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.904324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.904518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.904609] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.904769] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.904956] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.905123] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.905291] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.905452] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.905644] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.905817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.905995] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.906083] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.906246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.906363] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.906467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.906568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.906673] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.906826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.906990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.907177] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.907344] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.907514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.907622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.907717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.907879] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.908046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.908146] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.908307] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.908465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.908635] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.908747] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.908855] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.909016] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.909201] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.909308] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.909409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.909505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.909610] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.909695] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.909802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.909906] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.910076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.910157] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.910266] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.910459] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.910549] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.910665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.910749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.910855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.910964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.911078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.911159] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.911321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.911503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.911608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.911696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.911860] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.911968] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.912081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.912188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.912288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.912398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.912506] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.912616] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.912774] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.912877] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.913057] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.913207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.913310] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.913413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.913535] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.913648] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.913814] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.913921] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.914085] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.914184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.914286] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.914458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.914562] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.914646] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.914767] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.914943] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.915134] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.915318] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.915499] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.915610] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.915774] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.915943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.916046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.916158] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.916321] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.916427] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.916614] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.916719] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.916890] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.917080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.917178] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.917278] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.917389] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.917567] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.917723] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.917887] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.918045] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.920149] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.920327] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.920415] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.920514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.920677] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.920779] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.920880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.920965] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.921052] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.921194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.921281] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.921421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.921511] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.921595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.921680] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.921820] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.921975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.922066] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.922205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.922344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.922434] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.922528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.922644] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.922814] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.922921] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.923090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.923202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.923309] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.923415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.923607] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.923765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.923878] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.924047] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.924224] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.924391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.924495] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.924585] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.924764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.924925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.925024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.925127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.925296] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.925480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.925640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.925748] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.925915] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.926105] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.926212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.926294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.926399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.926480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.926667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.926751] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.926919] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.927034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.927144] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.927250] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.927421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.927585] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.927694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.927802] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.927970] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.928082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.928261] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.928349] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.928456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.928571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.928736] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.928900] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.929016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.929129] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.929237] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.929407] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.929593] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.929745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.929856] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.930024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.930115] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.930216] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.930386] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.930549] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.930712] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.930896] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.930974] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.931161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.931268] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.931377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.931459] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.931622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.931733] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.931835] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.931940] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.932050] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.932223] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.932389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.932500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.932609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.932693] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.932874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.932985] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.933145] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.933230] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.933394] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.933505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.933591] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.933785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.933870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.934062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.934243] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.934408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.934522] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.934625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.934723] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.934883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.934975] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.935144] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.935251] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.935433] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.935601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.935782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.935947] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.936112] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.936288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.938435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.938547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.938649] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.938818] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.938988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.939145] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.939233] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.939319] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.939400] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.939486] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.939565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.939640] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.939772] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.939855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.939941] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.940032] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.940177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.940259] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.940346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.940432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.940518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.940602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.940744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.940837] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.941009] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.941181] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.941290] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.941461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.941564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.941673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.941783] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.941946] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.942147] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.942317] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.942515] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.942681] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.942786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.942957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.943070] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.943187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.943302] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.943482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.943572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.943685] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.943835] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.943942] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.944113] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.944262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.944455] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.944650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.944812] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.944891] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.945056] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.945222] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.945378] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.945567] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.945647] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.945837] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.946001] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.946169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.946282] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.946469] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.946634] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.946795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.946948] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.947059] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.947144] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.947255] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.947415] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.947507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.947620] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.947773] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.947883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.948046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.948160] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.948328] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.948429] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.948588] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.948670] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.948782] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.948866] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.949057] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.949138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.949245] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.949359] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.949442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.949609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.949721] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.949839] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.950029] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.950204] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.950382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.950488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.950594] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.950757] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.950868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.951027] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.951212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.951306] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.951420] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.951619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.951727] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.951886] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.951993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.952159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.952273] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.952384] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.952558] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.952669] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.952766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.952868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.953030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.953107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.953215] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.953326] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.953492] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.953601] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.953708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.953871] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.954028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.954137] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.954238] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.954407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.954516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.956657] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.956830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.956938] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.957047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.957208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.957374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.957506] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.957647] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.957731] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.957821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.957908] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.957993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.958076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.958164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.958247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.958382] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.958530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.958619] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.958762] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.958844] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.958927] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.959099] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.959267] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.959430] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.959550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.959656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.959824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.959912] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.960017] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.960101] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.960284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.960388] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.960580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.960748] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.960858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.960965] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.961071] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.961148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.961254] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.961415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.961598] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.961758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.961850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.961949] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.962117] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.962227] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.962333] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.962504] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.962704] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.962806] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.962909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.962992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.963101] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.963212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.963374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.963546] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.963736] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.963844] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.963951] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.964111] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.964274] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.964386] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.964558] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.964721] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.964880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.964996] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.965099] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.965202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.965312] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.965394] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.965500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.965611] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.965787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.965882] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.966061] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.966227] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.966396] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.966498] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.966673] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.966837] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.967019] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.967194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.967353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.967528] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.967690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.967883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.967991] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.968159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.968263] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.968364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.968475] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.968579] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.968754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.968860] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.969032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.969108] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.969296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.969382] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.969543] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.969651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.969815] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.969977] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.970067] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.970229] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.970397] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.970565] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.970754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.970842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.971028] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.971230] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.971391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.971498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.971609] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.971864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.972039] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.972207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.972305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.972414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.972543] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.972704] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.974783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.974870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.974984] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.975090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.975278] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.975445] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.975582] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.975729] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.975869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.975953] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.976037] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.976181] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.976272] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.976356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.976439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.976575] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.976661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.976734] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.976817] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.976900] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.976979] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.977062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.977147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.977255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.977359] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.977475] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.977586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.977668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.977777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.977892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.977978] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.978138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.978255] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.978417] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.978537] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.978704] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.978892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.979000] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.979170] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.979339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.979516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.979622] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.979811] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.979997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.980168] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.980357] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.980465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.980649] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.980751] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.980857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.981024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.981129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.981285] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.981451] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.981558] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.981640] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.981823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.981910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.982018] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.982103] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.982212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.982325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.982438] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.982596] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.982770] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.982928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.983095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.983206] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.983366] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.983536] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.983651] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.983810] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.983917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.984027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.984106] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.984301] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.984476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.984582] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.984686] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.984841] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.985034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.985138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.985255] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.985413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.985497] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.985669] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.985777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.985946] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.986120] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.986226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.986335] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.986497] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.986682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.986863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.986971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.987062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.987218] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.987402] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.987516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.987603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.987701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.987809] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.987918] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.988073] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.988237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.988343] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.988516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.988619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.988725] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.988811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.988923] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.989109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.989274] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.989423] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.989592] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.989761] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.989932] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.990100] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.990289] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.990394] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.990588] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.990710] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.990866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.990956] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.993056] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.993213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.993329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.993439] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.993518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.993621] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.993775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.993855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.993940] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  445.994077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.994156] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.994242] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  445.994327] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.994414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.994507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.994590] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.994724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.994871] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.995016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.995099] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  445.995241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.995326] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.995413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.995524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  445.995687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.995796] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.995986] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.996100] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.996271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.996376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.996490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.996584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.996690] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.996803] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.996986] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.997178] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  445.997343] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.997445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.997530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.997638] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.997716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.997824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.997936] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  445.998102] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.998287] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.998402] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.998483] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.998590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  445.998695] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.998801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.998908] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.998987] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.999096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.999194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.999372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.999500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  445.999612] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  445.999779] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  445.999870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  445.999971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.000057] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.000240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.000346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.000456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.000564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.000759] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.000918] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.001002] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.001111] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.001304] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.001416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.001531] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.001705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.001820] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.002003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.002167] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.002356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.002469] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.002628] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.002814] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.002986] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.003160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.003271] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.003461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.003541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.003644] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.003740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.003916] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.004081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.004190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.004296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.004409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.004574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.004733] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.004896] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.005059] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.005247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.005416] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.005566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.005650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.005806] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.005991] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.006073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.006180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.006377] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.006543] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.006648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.006725] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.006925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.007030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.007138] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.007403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.007494] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.007601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.007770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.007852] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.008009] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.008175] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.008285] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.008389] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.008564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.008671] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.008758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.008863] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.009055] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.009140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.009242] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.009325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.009438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.011532] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.011718] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.011802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.011902] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.012017] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.012128] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.012323] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.012457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.012542] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.012618] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.012761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.012845] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.012980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.013127] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.013211] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.013351] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.013436] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.013520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.013596] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.013737] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.013822] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.013916] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.014084] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.014194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.014301] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.014409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.014512] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.014670] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.014784] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.014866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.014978] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.015078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.015186] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.015289] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.015468] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.015562] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.015735] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.015906] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.016005] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.016175] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.016359] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.016454] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.016565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.016668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.016768] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.016861] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.016971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.017078] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.017260] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.017368] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.017537] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.017644] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.017748] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.017943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.018058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.018163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.018324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.018485] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.018645] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.018807] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.018912] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.019075] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.019241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.019360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.019537] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.019731] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.019909] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.020069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.020180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.020274] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.020460] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.020574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.020661] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.020839] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.021004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.021171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.021279] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.021364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.021540] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.021719] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.021795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.021959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.022071] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.022175] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.022337] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.022502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.022586] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.022758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.022859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.022967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.023133] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.023319] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.023488] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.023653] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.023828] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.024019] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.024192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.024294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.024374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.024572] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.024731] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.024835] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.024944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.025038] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.025195] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.025379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.025550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.025711] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.025883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.025990] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.026092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.026173] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.026343] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.026506] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.026668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.026776] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.026946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.027058] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.027221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.027334] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.027503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.029627] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.029730] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.029894] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.030058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.030161] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.030321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.030463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.030605] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.030689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.030836] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.030921] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.031065] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.031152] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.031235] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.031371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.031452] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.031603] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.031744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.031829] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.031915] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.031999] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.032196] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.032284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.032392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.032490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.032607] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.032788] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.032877] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.033048] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.033241] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.033409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.033579] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.033684] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.033848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.033953] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.034113] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.034282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.034403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.034565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.034677] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.034874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.034959] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.035146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.035254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.035367] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.035535] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.035708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.035869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.035971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.036082] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.036170] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.036282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.036392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.036507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.036592] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.036782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.036952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.037032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.037138] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.037305] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.037494] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.037579] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.037689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.037867] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.038056] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.038169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.038256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.038428] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.038591] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.038690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.038876] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.038983] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.039150] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.039338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.039447] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.039608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.039691] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.039869] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.040026] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.040197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.040306] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.040419] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.040575] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.040742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.040927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.041040] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.041200] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.041371] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.041539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.041652] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.041755] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.041928] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.042093] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.042200] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.042287] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.042489] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.042576] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.042681] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.042853] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.043011] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.043215] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.043382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.043489] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.043655] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.043764] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.043872] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.043952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.044062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.044223] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.044381] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.044567] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.044731] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.044901] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.045069] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.045228] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.045335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.045455] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.045615] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.045714] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.047738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.047845] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.047929] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.048039] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.048232] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.048317] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.048515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.048600] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.048740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.048874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.049024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.049114] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.049257] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.049402] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.049498] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.049637] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.049774] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.049917] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.050066] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.050235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.050335] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.050517] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.050605] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.050795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.050882] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.051064] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.051235] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.051392] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.051553] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.051724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.051884] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.051974] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.052149] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.052315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.052398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.052505] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.052678] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.052777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.052861] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.052978] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.053092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.053171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.053276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.053380] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.053487] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.053657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.053762] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.053852] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.054016] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.054184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.054292] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.054458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.054554] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.054675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.054777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.054879] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.054965] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.055080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.055190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.055288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.055372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.055476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.055585] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.055690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.055880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.055986] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.056098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.056212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.056379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.056568] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.056732] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.056897] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.057057] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.057162] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.057329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.057443] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.057630] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.057744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.057931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.058035] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.058210] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.058403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.058589] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.058674] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.058857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.059036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.059136] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.059243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.059326] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.059436] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.059593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.059675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.059780] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.059941] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.060110] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.060215] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.060318] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.060483] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.060638] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.060745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.060854] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.061024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.061109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.061286] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.061472] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.061572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.061666] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.061772] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.061872] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.062053] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.062218] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.062324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.062502] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.062662] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.062773] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.062880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.062986] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.063092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.063171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.063276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.063440] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.063625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.063717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.063826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.063933] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.065985] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.066144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.066295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.066409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.066590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.066694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.066777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.066864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.066941] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.067024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.067110] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.067188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.067269] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.067407] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.067559] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.067704] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.067842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.067985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.068074] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.068212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.068350] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.068453] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.068555] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.068723] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.068894] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.069061] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.069163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.069271] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.069463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.069652] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.069815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.069917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.070023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.070110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.070267] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.070374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.070542] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.070629] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.070735] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.070892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.071007] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.071177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.071295] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.071461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.071568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.071678] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.071765] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.071944] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.072108] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.072268] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.072439] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.072551] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.072656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.072767] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.072930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.073034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.073138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.073219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.073330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.073439] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.073553] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.073718] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.073828] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.073926] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.074096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.074203] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.074388] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.074574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.074740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.074904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.074984] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.075153] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.075266] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.075452] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.075561] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.075648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.075754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.075859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.075975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.076088] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.076193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.076298] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.076407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.076492] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.076678] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.076850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.076957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.077056] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.077139] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.077306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.077468] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.077627] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.077736] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.077895] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.078087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.078164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.078276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.078566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.078672] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.078866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.078978] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.079081] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.079247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.079440] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.079520] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.079677] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.079872] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.080052] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.080213] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.080361] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.080525] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.080690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.080859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.080950] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.081068] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.081246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.081336] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.081518] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.081687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.081795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.081905] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.082072] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.082158] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.084177] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.084334] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.084500] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.084701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.084781] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.084897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.085007] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.085151] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.085297] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.085444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.085532] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.085676] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.085760] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.085903] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.086043] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.086123] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.086208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.086351] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.086492] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.086660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.086746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.086863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.086949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.087052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.087162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.087279] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.087441] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.087602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.087765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.087875] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.088030] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.088196] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.088394] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.088481] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.088649] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.088845] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.089013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.089184] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.089347] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.089457] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.089652] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.089811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.089923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.090032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.090139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.090246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.090330] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.090499] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.090609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.090713] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.090872] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.090954] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.091062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.091230] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.091398] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.091567] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.091729] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.091839] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.091996] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.092165] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.092275] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.092441] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.092610] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.092789] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.092891] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.092994] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.093103] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.093263] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.093367] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.093537] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.093653] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.093834] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.093925] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.094091] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.094201] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.094367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.094450] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.094632] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.094720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.094831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.094919] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.095024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.095137] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.095314] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.095480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.095663] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.095844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.096011] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.096194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.096284] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.096465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.096642] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.096802] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.096992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.097078] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.097270] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.097444] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.097611] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.097799] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.097990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.098149] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.098235] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.098396] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.098503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.098661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.098742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.098851] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.099018] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.099122] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.099228] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.099386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.099482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.099581] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.099742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.099859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.099947] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.100046] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.102154] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.102321] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.102431] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.102610] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.102724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.102826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.102932] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.103076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.103162] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.103306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.103456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.103544] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.103626] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.103711] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.103847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.103931] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.104078] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.104218] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.104304] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.104391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.104470] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.104547] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.104720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.104832] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.104990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.105182] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.105344] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.105499] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.105692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.105856] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.105943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.106045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.106157] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.106341] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.106514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.106618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.106707] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.106874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.106977] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.107081] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.107277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.107386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.107473] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.107661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.107742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.107848] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.108013] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.108118] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.108296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.108386] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.108557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.108658] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.108856] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.108959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.109041] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.109140] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.109310] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.109488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.109583] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.109769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.109885] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.110051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.110211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.110381] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.110578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.110685] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.110845] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.111007] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.111192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.111268] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.111382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.111495] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.111588] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.111770] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.111959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.112044] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.112204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.112316] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.112486] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.112663] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.112822] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.112915] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.113080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.113177] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.113349] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.113510] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.113674] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.113842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.114010] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.114115] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.114300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.114505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.114602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.114772] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.114964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.115058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.115154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.115254] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.115435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.115543] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.115622] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.115815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.115897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.116004] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.116106] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.116283] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.116388] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.116477] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.116632] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.116739] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.116896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.117079] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.117264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.117376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.117469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.117573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.117657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.117760] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.117944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.118054] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.118142] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.120280] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.120482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.120586] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.120756] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.120914] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.121017] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.121157] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.121289] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.121437] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.121524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.121615] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.121758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.121845] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.121996] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.122133] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.122279] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.122367] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.122507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.122592] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.122759] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.122840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.122945] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.123053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.123133] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.123244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.123353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.123527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.123693] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.123862] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.124029] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.124134] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.124242] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.124355] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.124468] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.124548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.124659] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.124744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.124912] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.125021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.125131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.125230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.125340] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.125427] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.125605] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.125711] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.125887] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.125993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.126097] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.126265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.126371] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.126542] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.126700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.126785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.126899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.127013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.127201] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.127304] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.127489] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.127655] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.127766] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.127941] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.128051] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.128152] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.128253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.128361] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.128542] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.128684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.128789] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.128976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.129054] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.129159] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.129327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.129511] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.129614] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.129724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.129823] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.129992] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.130171] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.130327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.130494] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.130658] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.130770] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.130963] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.131083] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.131243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.131350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.131522] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.131692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.131889] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.132056] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.132219] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.132389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.132498] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.132681] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.132763] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.132922] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.133029] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.133195] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.133363] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.133472] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.133578] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.133743] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.133910] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.134077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.134182] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.134297] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.134459] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.134617] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.134696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.134865] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.135018] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.135122] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.135224] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.135393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.135508] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.135676] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.135839] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.135997] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.136110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.136295] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.138374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.138482] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.138641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.138747] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.138909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.139010] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.139095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.139169] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.139312] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.139457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.139546] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.139683] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.139818] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.139901] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.139988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.140069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.140153] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.140295] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.140450] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.140538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.140620] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.140706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.140819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.140915] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.141080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.141192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.141273] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.141465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.141641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.141736] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.141838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.141917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.142032] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.142199] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.142371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.142489] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.142681] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.142856] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.143012] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.143117] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.143224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.143335] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.143514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.143630] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.143800] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.143976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.144171] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.144338] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.144514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.144701] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.144871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.144976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.145085] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.145177] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.145365] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.145450] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.145565] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.145720] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.145888] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.146079] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.146195] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.146278] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.146471] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.146549] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.146712] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.146818] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.146987] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.147151] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.147324] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.147432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.147518] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.147696] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.147867] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.147972] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.148129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.148335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.148422] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.148590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.148700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.148799] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.148970] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.149127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.149300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.149387] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.149570] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.149732] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.149906] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.149988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.150274] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.150391] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.150560] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.150725] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.150831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.150914] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.151081] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.151275] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.151361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.151467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.151570] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.151739] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.151847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.151946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.152029] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.152144] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.152257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.152342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.152458] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.152622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.152732] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.152843] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.152925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.153028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.153139] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.153304] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.153389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.153496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.153610] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.153713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.153812] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.153904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.154014] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.154188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.154289] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.154391] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.154543] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.156686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.156791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.156905] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.156987] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.157172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.157343] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.157448] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.157531] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.157669] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.157743] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.157819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.157903] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.158042] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.158193] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.158337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.158424] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.158510] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.158659] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.158799] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.158944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.159030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.159132] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.159238] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.159357] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.159470] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.159639] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.159801] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.159973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.160084] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.160188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.160302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.160408] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.160578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.160689] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.160845] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.160932] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.161037] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.161136] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.161253] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.161421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.161594] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.161751] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.161855] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.162052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.162163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.162323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.162487] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.162599] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.162689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.162877] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.162990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.163154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.163245] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.163421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.163527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.163626] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.163798] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.163979] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.164088] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.164249] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.164419] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.164512] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.164621] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.164780] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.164963] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.165129] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.165214] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.165401] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.165510] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.165595] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.165779] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.165864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.165983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.166092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.166264] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.166463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.166547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.166657] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.166815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.166926] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.167089] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.167256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.167450] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.167609] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.167773] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.167859] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.168056] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.168216] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.168396] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.168562] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.168671] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.168844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.169014] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.169115] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.169205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.169385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.169550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.169653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.169765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.169858] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.170017] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.170110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.170268] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.170442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.170556] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.170719] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.170882] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.170994] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.171156] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.171247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.171365] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.171481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.171588] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.171748] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.171863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.171980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.172139] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.172302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.172420] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.172589] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.172693] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.174813] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.174908] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.175073] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.175249] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.175417] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.175582] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.175667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.175758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.175844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.175986] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.176067] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.176210] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.176351] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.176497] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.176585] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.176665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.176752] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.176889] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.176983] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.177123] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.177209] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.177396] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.177475] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.177589] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.177694] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.177859] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.178028] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.178194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.178300] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.178477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.178577] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.178746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.178851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.178958] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.179117] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.179295] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.179476] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.179640] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.179805] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.179994] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.180153] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.180264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.180373] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.180532] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.180686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.180791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.180881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.180987] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.181099] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.181266] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.181425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.181526] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.181699] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.181866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.181968] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.182071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.182234] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.182409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.182496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.182607] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.182687] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.182865] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.183046] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.183220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.183338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.183443] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.183613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.183713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.183827] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.183992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.184105] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.184281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.184450] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.184564] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.184721] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.184830] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.185001] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.185108] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.185273] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.185386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.185496] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.185670] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.185864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.185977] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.186136] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.186247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.186361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.186449] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.186634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.186744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.186831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.186934] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.187039] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.187206] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.187369] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.187470] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.187632] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.187801] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.187990] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.188075] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.188190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.188380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.188534] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.188698] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.188860] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.189055] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.189235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.189320] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.189507] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.189673] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.189874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.190045] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.190207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.190313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.190405] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.190571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.190738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.190850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.192884] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.193065] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.193226] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.193392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.193502] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.193663] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.193748] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.193890] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.194026] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.194166] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.194242] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.194382] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.194524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.194616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.194703] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.194848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.194933] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.195020] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.195157] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.195248] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.195364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.195527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.195611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.195727] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.195894] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.196061] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.196259] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.196423] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.196602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.196768] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.196938] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.197103] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.197290] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.197404] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.197573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.197675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.197790] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.197948] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.198131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.198214] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.198404] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.198565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.198664] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.198824] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.198983] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.199142] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.199306] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.199399] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.199566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.199665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.199745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.199847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.199934] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.200119] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.200201] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.200305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.200411] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.200518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.200619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.200705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.200812] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.200923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.201008] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.201173] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.201364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.201529] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.201614] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.201775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.201866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.201981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.202081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.202165] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.202269] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.202379] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.202486] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.202672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.202756] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.202864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.202979] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.203164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.203270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.203381] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.203555] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.203747] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.203852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.203935] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.204101] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.204205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.204360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.204470] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.204637] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.204826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.204941] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.205115] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.205215] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.205398] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.205571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.205763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.205869] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.206035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.206143] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.206304] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.206416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.206498] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.206682] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.206789] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.206875] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.207083] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.207248] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.207361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.207462] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.207619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.207736] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.207907] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.208070] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.208234] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.208393] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.208554] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.208712] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.210807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.210969] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.211139] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.211299] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.211387] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.211502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.211592] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.211675] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.211820] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.211905] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.212044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.212130] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.212211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.212355] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.212441] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.212530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.212616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.212699] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.212787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.212869] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.213013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.213155] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.213268] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.213362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.213523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.213627] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.213731] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.213906] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.214085] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.214189] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.214363] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.214473] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.214567] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.214665] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.214861] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.214952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.215045] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.215232] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.215431] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.215584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.215690] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.215796] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.215967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.216129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.216302] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.216482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.216592] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.216760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.216846] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.216948] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.217050] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.217207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.217402] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.217566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.217679] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.217861] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.218011] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.218099] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.218264] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.218446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.218546] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.218708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.218864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.219025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.219118] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.219304] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.219464] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.219651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.219849] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.219938] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.220105] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.220272] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.220465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.220636] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.220805] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.220963] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.221075] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.221158] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.221262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.221425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.221525] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.221636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.221723] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.221834] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.222013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.222281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.222458] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.222621] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.222728] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.222830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.222925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.223026] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.223192] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.223356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.223471] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.223560] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.223718] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.223909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.224015] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.224177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.224278] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.224397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.224511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.224680] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.224836] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.224939] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.225105] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.225273] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.225438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.225548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.225664] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.225842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.226014] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.226173] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.226356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.226438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.226552] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.226717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.228817] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.228914] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.229005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.229110] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.229217] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.229321] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.229410] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.229521] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.229664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.229747] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.229826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.229907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.229987] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.230128] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.230272] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.230418] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.230503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.230640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.230725] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.230820] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.230906] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.231048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.231125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.231232] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.231409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.231592] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.231693] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.231799] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.231914] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.232079] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.232184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.232290] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.232486] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.232600] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.232770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.232851] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.233014] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.233209] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.233372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.233478] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.233582] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.233742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.233913] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.234092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.234181] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.234352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.234463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.234658] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.234767] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.234936] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.235050] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.235208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.235404] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.235571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.235727] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.235895] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.236005] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.236171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.236273] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.236384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.236470] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.236636] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.236804] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.236909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.237020] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.237184] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.237349] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.237456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.237567] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.237726] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.237897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.238011] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.238094] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.238197] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.238364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.238451] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.238616] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.238797] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.238883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.238991] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.239177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.239294] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.239458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.239540] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.239740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.239898] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.240007] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.240101] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.240220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.240340] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.240507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.240603] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.240776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.240888] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.241072] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.241241] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.241397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.241501] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.241607] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.241772] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.241888] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.242058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.242169] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.242347] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.242512] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.242679] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.242794] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.242900] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.243081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.243190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.243362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.243473] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.243554] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.243660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.243759] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.243865] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.243948] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.244110] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.244222] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.244407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.244486] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.244664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.244744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.244854] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.244952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.247073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.247188] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.247362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.247476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.247587] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.247779] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.247870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.247953] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.248093] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.248236] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.248319] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.248398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.248484] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.248623] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.248708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.248849] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.248990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.249124] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.249279] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.249419] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.249504] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.249613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.249717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.249827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.249933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.250098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.250207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.250374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.250548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.250650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.250816] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.250934] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.251037] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.251142] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.251242] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.251355] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.251523] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.251683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.251776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.251874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.251967] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.252064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.252174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.252291] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.252460] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.252565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.252666] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.252777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.252884] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.253001] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.253159] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.253321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.253484] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.253657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.253766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.253873] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.254054] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.254232] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.254339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.254511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.254702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.254807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.254986] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.255094] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.255187] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.255378] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.255551] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.255724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.255826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.255995] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.256145] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.256228] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.256341] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.256498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.256613] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.256775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.256877] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.256963] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.257154] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.257320] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.257405] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.257681] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.257762] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.257948] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.258058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.258145] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.258313] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.258490] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.258679] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.258766] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.258939] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.259048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.259154] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.259338] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.259516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.259601] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.259712] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.259897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.259980] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.260089] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.260204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.260318] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.260486] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.260600] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.260765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.260874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.261031] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.261141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.261305] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.261459] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.261625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.261726] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.261833] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.261941] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.262027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.262136] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.262219] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.262409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.262514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.262600] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.262789] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.262984] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.263141] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.263247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.263358] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.263445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.265505] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.265670] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.265783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.265864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.266053] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.266220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.266330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.266416] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.266558] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.266702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.266788] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.266868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.266954] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.267097] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.267244] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.267391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.267473] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.267616] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.267759] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.267889] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.268053] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.268226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.268337] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.268500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.268590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.268696] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.268815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.268926] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.269013] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.269116] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.269231] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.269403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.269511] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.269618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.269728] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.269810] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.269912] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.269990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.270179] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.270259] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.270373] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.270477] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.270653] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.270816] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.270984] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.271095] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.271262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.271444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.271552] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.271668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.271776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.271885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.271981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.272082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.272244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.272353] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.272462] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.272569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.272682] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.272791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.272903] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.273016] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.273177] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.273366] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.273449] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.273555] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.273663] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.273826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.273986] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.274092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.274258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.274421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.274619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.274726] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.274911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.275085] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.275250] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.275360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.275542] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.275653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.275757] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.275915] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.276025] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.276187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.276305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.276410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.276572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.276676] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.276839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.276947] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.277116] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.277286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.277364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.277550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.277639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.277746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.277857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.278030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.278148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.278234] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.278422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.278529] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.278611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.278716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.278825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.278909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.279018] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.279205] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.279296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.279411] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.279566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.279667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.279772] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.279885] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.280040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.280151] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.280230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.280349] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.280452] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.280632] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.280722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.280907] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.281077] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.281240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.281351] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.281540] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.281646] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.281825] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.283950] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.284115] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.284233] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.284404] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.284509] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.284675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.284761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.284844] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.284926] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.285070] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.285210] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.285292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.285372] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.285519] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.285659] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.285802] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.285947] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.286087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.286172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.286311] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.286422] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.286584] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.286744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.286850] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.287025] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.287189] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.287371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.287481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.287564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.287731] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.287841] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.288034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.288120] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.288230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.288347] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.288506] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.288671] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.288762] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.288949] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.289112] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.289219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.289312] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.289486] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.289603] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.289769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.289876] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.290035] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.290205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.290398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.290483] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.290593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.290698] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.290871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.290981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.291171] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.291332] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.291410] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.291517] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.291618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.291720] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.291896] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.292005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.292120] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.292288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.292392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.292479] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.292678] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.292840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.292922] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.293092] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.293373] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.293480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.293591] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.293753] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.293864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.293945] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.294113] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.294309] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.294482] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.294667] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.294831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.295026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.295108] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.295290] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.295395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.295481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.295589] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.295667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.295774] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.295884] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.295988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.296159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.296264] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.296431] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.296589] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.296777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.296941] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.297113] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.297282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.297365] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.297477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.297578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.297668] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.297852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.297948] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.298054] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.298163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.298351] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.298515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.298613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.298711] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.298821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.298904] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.299078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.299166] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.299270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.299376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.299463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.299573] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.299737] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.299825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.299929] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.300041] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.302257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.302360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.302464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.302563] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.302734] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.302920] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.303071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.303213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.303296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.303380] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.303463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.303608] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.303748] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.303830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.303909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.303995] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.304080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.304170] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.304258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.304399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.304485] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.304622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.304736] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.304928] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.305036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.305115] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.305286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.305395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.305472] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.305581] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.305749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.305856] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.305966] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.306129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.306300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.306407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.306515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.306613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.306726] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.306831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.307020] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.307187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.307292] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.307459] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.307625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.307731] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.307840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.307950] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.308116] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.308226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.308335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.308447] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.308612] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.308717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.308833] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.308997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.309159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.309265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.309377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.309476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.309581] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.309698] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.309857] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.309942] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.310053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.310159] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.310327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.310488] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.310679] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.310843] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.311023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.311129] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.311239] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.311397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.311514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.311682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.311850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.311962] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.312131] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.312322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.312426] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.312531] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.312696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.312888] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.313051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.313215] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.313382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.313494] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.313578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.313682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.313850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.313958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.314064] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.314229] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.314396] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.314502] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.314657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.314764] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.314847] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.315015] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.315122] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.315238] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.315351] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.315507] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.315685] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.315851] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.316018] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.316197] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.316379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.316545] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.316735] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.316898] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.317061] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.317163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.317339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.317505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.317601] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.317703] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.317814] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.317924] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.318083] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.318184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.318294] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.318454] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.320428] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.320598] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.320703] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.320812] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.320933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.321092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.321203] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.321295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.321385] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.321472] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.321610] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.321693] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.321839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.321925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.322009] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.322152] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.322240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.322333] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.322478] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.322558] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.322645] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.322785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.322864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.322976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.323142] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.323259] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.323447] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.323610] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.323712] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.323870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.324057] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.324147] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.324334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.324425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.324533] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.324639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.324746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.324848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.324948] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.325053] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.325232] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.325344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.325444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.325527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.325730] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.325886] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.326053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.326160] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.326329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.326440] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.326548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.326634] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.326811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.326922] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.327085] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.327280] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.327455] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.327556] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.327724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.328009] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.328092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.328289] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.328395] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.328550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.328715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.328824] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.328991] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.329153] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.329262] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.329366] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.329548] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.329708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.329881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.329975] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.330139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.330239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.330355] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.330469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.330549] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.330716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.330824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.330928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.331101] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.331208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.331380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.331546] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.331651] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.331754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.331832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.331943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.332048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.332154] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.332329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.332410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.332573] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.332758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.332846] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.333038] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.333144] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.333258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.333422] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.333612] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.333780] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.333890] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.334059] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.334226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.334329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.334437] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.334544] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.334712] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.334897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.335009] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.335178] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.335344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.335451] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.335533] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.335717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.335802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.335908] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.336014] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.336178] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.336289] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.336448] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.336615] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.336720] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.338847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.338933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.339134] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.339234] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.339330] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.339507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.339608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.339697] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.339830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.339910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.339993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.340083] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.340167] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.340313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.340400] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.340481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.340568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.340655] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.340798] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.340949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.341036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.341120] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.341207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.341384] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.341552] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.341660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.341763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.341872] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.341981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.342085] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.342190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.342279] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.342459] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.342566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.342677] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.342842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.343004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.343195] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.343303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.343406] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.343574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.343657] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.343842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.344023] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.344180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.344271] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.344466] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.344565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.344668] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.344841] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.345037] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.345207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.345320] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.345422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.345526] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.345614] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.345724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.345833] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.345994] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.346153] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.346314] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.346498] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.346653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.346741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.346846] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.346960] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.347069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.347150] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.347262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.347469] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.347634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.347716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.347827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.347915] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.348028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.348135] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.348346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.348458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.348553] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.348656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.348745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.348852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.348958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.349034] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.349202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.349316] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.349479] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.349578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.349693] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.349872] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.350035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.350146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.350308] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.350412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.350516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.350685] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.350868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.351022] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.351128] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.351320] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.351427] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.351541] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.351707] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.351887] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.351978] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.352090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.352256] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.352368] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.352550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.352708] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.352803] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.352991] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.353160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.353276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.353450] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.353614] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.353788] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.353983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.354069] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.354253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.354370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.354527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.354688] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.354859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.354967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.355127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.357212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.357318] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.357484] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.357579] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.357684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.357778] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.357943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.358030] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.358175] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.358322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.358406] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.358557] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.358700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.358783] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.358923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.359009] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.359097] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.359177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.359255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.359345] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.359430] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.359510] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.359627] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.359741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.359827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.359941] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.360121] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.360286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.360382] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.360560] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.360643] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.360742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.360856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.361021] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.361177] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.361353] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.361461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.361571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.361738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.361848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.361954] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.362055] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.362165] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.362354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.362454] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.362555] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.362666] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.362827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.362939] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.363208] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.363313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.363395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.363496] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.363697] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.363852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.363957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.364036] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.364207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.364318] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.364428] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.364594] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.364697] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.364808] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.365006] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.365163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.365284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.365393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.365498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.365610] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.365692] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.365801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.365910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.366021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.366137] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.366316] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.366480] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.366643] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.366839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.366942] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.367041] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.367217] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.367328] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.367436] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.367591] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.367762] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.367872] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.367981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.368092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.368203] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.368366] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.368562] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.368666] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.368847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.368952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.369036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.369150] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.369311] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.369464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.369549] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.369659] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.369764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.369922] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.370112] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.370289] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.370393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.370471] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.370583] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.370761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.370872] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.370981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.371060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.371172] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.371334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.371445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.371525] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.371711] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.371818] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.371972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.372084] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.372241] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.372411] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.372516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.372682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.372844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.373014] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.373121] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.373235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.373347] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.373443] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.373634] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.373805] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.375849] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.375956] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.376153] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.376258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.376428] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.376512] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.376612] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.376695] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.376774] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.376908] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.376989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.377078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.377161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.377250] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.377338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.377421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.377556] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.377643] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.377789] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.377932] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.378071] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.378151] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.378238] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.378351] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.378461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.378570] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.378681] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.378843] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.378946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.379057] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.379157] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.379323] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.379434] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.379549] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.379654] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.379834] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.380006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.380106] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.380214] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.380393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.380484] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.380646] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.380751] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.380926] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.381030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.381120] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.381233] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.381344] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.381519] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.381679] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.381787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.381891] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.382052] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.382250] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.382407] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.382583] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.382741] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.382925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.383034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.383118] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.383232] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.383398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.383493] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.383603] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.383768] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.383882] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.383991] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.384178] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.384351] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.384437] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.384539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.384655] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.384812] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.384919] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.385085] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.385254] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.385410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.385575] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.385736] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.385846] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.385957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.386062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.386145] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.386266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.386377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.386483] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.386593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.386706] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.386867] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.386978] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.387139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.387250] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.387437] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.387528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.387637] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.387794] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.387900] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.388056] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.388225] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.388395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.388481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.388593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.388706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.388817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.388999] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.389102] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.389286] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.389458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.389567] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.389732] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.389832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.389946] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.390107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.390270] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.390452] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.390606] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.390715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.390795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.390898] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.390988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.391161] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.391335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.391440] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.391552] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.391659] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.391826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.391992] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.392152] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.394235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.394342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.394448] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.394527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.394692] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.394796] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.394967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.395110] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.395251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.395330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.395411] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.395490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.395570] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.395712] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.395795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.395939] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.396026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.396107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.396196] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.396279] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.396362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.396515] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.396685] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.396800] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.396910] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.397074] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.397270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.397352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.397547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.397643] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.397807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.397985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.398097] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.398286] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.398453] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.398612] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.398720] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.398886] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.398989] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.399176] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.399353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.399514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.399624] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.399810] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.399981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.400145] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.400254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.400369] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.400477] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.400635] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.400807] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.400910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.400995] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.401102] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.401193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.401294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.401401] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.401511] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.401597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.401703] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.401868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.401974] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.402053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.402159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.402271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.402379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.402530] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.402691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.402777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.402962] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.403131] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.403292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.403398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.403506] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.403609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.403722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.403880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.403985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.404090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.404190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.404383] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.404492] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.404584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.404691] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.404880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.404993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.405174] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.405330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.405412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.405527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.405641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.405726] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.405897] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.406065] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.406171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.406280] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.406391] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.406569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.406657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.406764] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.406874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.406983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.407095] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.407257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.407379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.407568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.407658] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.407849] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.408011] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.408180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.408292] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.408476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.408590] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.408747] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.408832] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.409021] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.409179] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.409344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.409454] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.409636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.409742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.409927] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.410093] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.410262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.410419] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.410579] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.412688] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.412770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.412876] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.412988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.413079] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.413246] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.413414] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.413552] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.413638] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.413780] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.413925] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.414060] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.414203] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.414288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.414374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.414453] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.414544] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.414684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.414775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.414860] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.414940] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.415024] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.415219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.415325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.415423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.415528] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.415703] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.415864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.416025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.416134] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.416221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.416323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.416475] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.416650] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.416729] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.416834] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.417029] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.417129] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.417231] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.417314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.417422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.417531] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.417633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.417739] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.417896] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.418006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.418118] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.418314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.418396] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.418562] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.418726] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.418914] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.419109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.419284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.419363] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.419471] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.419576] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.419749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.419856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.420048] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.420208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.420402] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.420518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.420625] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.420793] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.420983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.421070] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.421181] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.421351] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.421530] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.421693] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.421863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.421973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.422069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.422181] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.422293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.422410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.422568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.422672] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.422827] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.422991] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.423096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.423207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.423318] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.423484] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.423594] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.423754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.423866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.423975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.424054] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.424163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.424336] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.424416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.424523] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.424696] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.424811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.424915] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.425026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.425136] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.425303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.425421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.425602] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.425693] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.425806] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.425999] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.426156] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.426327] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.426434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.426608] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.426792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.426972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.427057] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.427241] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.427407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.427514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.427684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.427791] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.427976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.428140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.428251] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.428413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.428517] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.428619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.428708] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.428811] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.430838] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.430993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.431161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.431269] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.431558] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.431661] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.431805] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.431886] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.432028] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.432167] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.432310] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.432453] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.432540] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.432687] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.432826] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.432967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.433109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.433202] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.433341] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.433459] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.433615] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.433781] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.433892] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.434050] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.434212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.434405] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.434571] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.434654] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.434818] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.434916] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.435081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.435197] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.435364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.435452] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.435553] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.435724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.435896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.436067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.436172] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.436266] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.436427] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.436536] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.436706] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.436866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.436969] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.437049] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.437229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.437336] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.437440] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.437542] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.437710] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.437813] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.437988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.438088] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.438208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.438377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.438472] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.438631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.438725] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.438897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.439014] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.439103] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.439274] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.439438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.439543] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.439725] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.439824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.439924] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.440035] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.440217] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.440333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.440427] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.440594] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.440764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.440939] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.441043] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.441144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.441320] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.441407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.441527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.441625] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.441804] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.441977] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.442142] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.442254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.442354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.442434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.442618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.442729] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.442836] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.443009] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.443121] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.443284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.443390] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.443547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.443630] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.443739] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.443848] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.444024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.444131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.444241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.444353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.444522] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.444681] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.444789] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.444870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.444984] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.445168] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.445342] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.445534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.445641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.445723] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.445838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.445943] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.446107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.446217] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.446385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.446566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.446678] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.446764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.446951] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.449066] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.449174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.449256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.449453] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.449622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.449734] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.449821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.449903] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.449990] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.450076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.450161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.450237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.450322] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.450467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.450548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.450632] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.450768] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.450920] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.451062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.451149] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.451299] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.451450] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.451564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.451667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.451780] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.451874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.452038] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.452220] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.452405] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.452517] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.452706] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.452873] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.452987] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.453152] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.453345] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.453425] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.453587] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.453699] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.453861] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.453968] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.454130] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.454228] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.454398] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.454582] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.454739] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.454847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.454925] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.455095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.455208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.455364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.455527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.455631] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.455795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.455952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.456129] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.456301] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.456474] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.456644] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.456759] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.456850] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.457030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.457129] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.457225] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.457337] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.457508] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.457699] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.457872] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.457980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.458143] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.458244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.458357] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.458528] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.458690] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.458808] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.458975] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.459137] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.459309] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.459393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.459497] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.459688] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.459782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.459960] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.460153] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.460237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.460344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.460442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.460534] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.460692] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.460793] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.460907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.461015] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.461174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.461293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.461374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.461480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.461584] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.461753] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.461918] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.462005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.462112] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.462303] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.462468] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.462629] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.462735] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.462819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.462923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.463024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.463122] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.463319] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.463401] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.463585] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.463771] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.463857] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.463960] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.464074] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.464184] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.464361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.464450] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.464614] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.464722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.464882] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.465061] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.467301] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.467405] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.467486] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.467604] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.467708] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.467821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.467910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.468018] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.468107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.468191] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.468274] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.468357] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.468437] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.468575] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.468720] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.468868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.469003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.469147] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.469292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.469378] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.469518] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.469653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.469757] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.469952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.470119] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.470217] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.470408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.470515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.470620] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.470730] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.470830] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.471013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.471186] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.471355] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.471519] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.471687] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.471853] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.471934] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.472040] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.472218] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.472321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.472491] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.472599] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.472762] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.472849] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.473039] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.473205] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.473316] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.473429] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.473612] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.473786] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.473862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.473964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.474044] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.474214] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.474318] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.474421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.474505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.474616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.474726] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.474882] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.474989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.475096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.475188] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.475385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.475546] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.475714] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.475823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.475903] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.476095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.476197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.476280] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.476454] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.476636] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.476837] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.477001] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.477182] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.477369] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.477472] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.477583] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.477686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.477799] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.477966] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.478078] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.478243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.478325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.478421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.478524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.478643] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.478804] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.478907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.479013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.479182] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.479287] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.479374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.479535] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.479641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.479725] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.479887] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.479993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.480151] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.480258] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.480366] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.480476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.480578] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.480739] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.480910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.481010] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.481213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.481323] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.481429] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.481515] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.481716] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.481883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.481987] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.482097] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.482212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.482380] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.482490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.482596] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.482767] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.482933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.483129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.483306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.483491] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.485545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.485629] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.485733] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.485819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.485926] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.486092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.486195] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.486334] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.486469] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.486617] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.486694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.486779] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.486921] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.487005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.487086] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.487170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.487301] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.487442] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.487574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.487720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.487806] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.487899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.488015] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.488118] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.488240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.488350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.488513] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.488631] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.488791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.488866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.488982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.489065] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.489182] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.489378] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.489461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.489572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.489675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.489780] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.489893] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.490060] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.490220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.490325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.490405] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.490592] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.490765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.490878] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.490979] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.491170] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.491261] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.491369] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.491528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.491634] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.491824] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.492011] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.492175] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.492341] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.492444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.492549] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.492728] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.492900] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.492979] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.493079] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.493273] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.493433] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.493519] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.493625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.493734] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.493910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.494009] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.494115] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.494226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.494318] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.494435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.494538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.494641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.494724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.494831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.494914] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.495027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.495134] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.495247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.495359] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.495521] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.495687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.495793] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.495967] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.496073] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.496236] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.496341] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.496452] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.496607] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.496710] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.496817] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.496928] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.497040] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.497211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.497409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.497592] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.497703] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.497892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.497992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.498103] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.498209] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.498310] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.498413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.498500] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.498686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.498763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.498870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.499038] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.499247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.499411] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.499525] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.499634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.499745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.499857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.500020] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.500127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.500292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.500381] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.500489] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.500597] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.500753] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.500865] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.501061] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.501253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.501354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.501435] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.501725] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.501832] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.501992] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.502165] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.504254] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.504412] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.504575] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.504736] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.504831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.504939] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.505090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.505180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.505317] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.505403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.505487] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.505630] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.505774] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.505916] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.506002] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.506140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.506224] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.506372] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.506516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.506688] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.506855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.506940] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.507048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.507140] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.507342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.507445] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.507607] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.507784] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.507970] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.508085] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.508253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.508337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.508446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.508532] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.508636] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.508799] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.508918] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.509025] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.509189] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.509364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.509463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.509630] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.509738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.509847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.509951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.510036] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.510232] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.510393] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.510561] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.510720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.510828] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.510991] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.511177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.511288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.511397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.511476] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.511655] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.511827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.511925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.512017] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.512209] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.512305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.512410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.512587] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.512764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.512933] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.513094] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.513259] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.513426] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.513613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.513778] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.513868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.513970] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.514079] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.514264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.514350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.514512] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.514691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.514805] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.514968] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.515133] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.515298] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.515408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.515521] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.515673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.515760] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.515928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.516095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.516214] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.516376] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.516545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.516650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.516823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.516927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.517036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.517143] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.517317] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.517482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.517594] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.517752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.517831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.517943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.518023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.518134] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.518240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.518351] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.518529] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.518636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.518739] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.518820] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.519011] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.519177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.519260] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.519367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.519475] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.519572] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.519750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.519862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.519971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.520081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.520168] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.522331] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.522441] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.522534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.522638] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.522813] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.523003] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.523135] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.523222] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.523306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.523441] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.523524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.523655] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.523802] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.523941] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.524023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.524107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.524250] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.524385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.524518] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.524665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.524779] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.524950] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.525051] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.525147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.525254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.525337] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.525493] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.525687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.525786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.525952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.526122] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.526285] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.526452] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.526563] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.526676] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.526839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.526945] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.527122] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.527204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.527310] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.527410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.527586] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.527750] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.527940] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.528141] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.528296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.528382] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.528564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.528727] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.528815] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.528972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.529075] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.529247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.529353] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.529468] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.529557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.529669] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.529835] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.529949] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.530142] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.530314] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.530472] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.530635] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.530741] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.530910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.530994] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.531190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.531353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.531525] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.531689] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.531799] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.531907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.531996] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.532105] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.532215] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.532405] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.532513] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.532597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.532709] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.532814] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.532928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.533098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.533188] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.533362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.533470] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.533632] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.533812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.533974] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.534055] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.534211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.534378] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.534484] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.534660] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.534827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.534931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.535042] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.535157] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.535321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.535518] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.535702] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.535857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.536029] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.536203] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.536306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.536473] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.536573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.536656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.536765] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.536933] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.537041] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.537223] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.537332] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.537427] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.537524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.537704] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.537965] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.538130] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.538287] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.540413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.540492] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.540605] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.540712] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.540793] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.540959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.541058] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.541205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.541344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.541425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.541508] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.541645] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.541726] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.541867] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.542016] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.542157] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.542243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.542328] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.542458] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.542599] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.542738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.542848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.542957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.543058] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.543255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.543341] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.543525] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.543619] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.543789] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.543896] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.544005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.544114] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.544295] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.544460] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.544634] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.544795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.544897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.545003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.545166] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.545277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.545371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.545463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.545570] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.545753] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.545927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.546027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.546146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.546241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.546348] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.546456] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.546621] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.546815] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.546975] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.547147] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.547314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.547409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.547588] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.547692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.547857] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.547969] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.548083] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.548195] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.548304] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.548410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.548578] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.548745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.548856] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.548961] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.549125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.549249] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.549403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.549567] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.549673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.549780] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.549864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.549968] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.550055] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.550257] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.550419] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.550530] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.550696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.550882] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.551044] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.551236] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.551396] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.551474] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.551587] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.551773] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.551852] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.552037] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.552204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.552285] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.552391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.552495] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.552695] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.552800] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.552908] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.553073] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.553249] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.553404] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.553571] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.553685] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.553767] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.553874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.553976] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.554147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.554263] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.554434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.554602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.554770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.554880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.554987] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.555176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.555291] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.555379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.555569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.555679] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.555766] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.555922] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.556092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.556262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.556459] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.558485] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.558649] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.558751] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.558915] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.559024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.559107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.559275] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.559360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.559445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.559534] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.559678] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.559823] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.559958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.560038] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.560138] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.560276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.560416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.560500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.560582] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.560667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.560752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.560837] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.560953] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.561127] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.561236] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.561389] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.561567] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.561656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.561761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.561868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.562048] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.562206] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.562290] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.562392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.562476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.562584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.562688] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.562793] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.562881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.562985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.563102] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.563213] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.563383] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.563493] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.563597] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.563766] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.563935] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.564045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.564141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.564314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.564422] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.564601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.564763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.564867] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.565037] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.565223] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.565381] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.565484] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.565593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.565709] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.565824] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.566006] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.566165] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.566357] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.566467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.566542] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.566654] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.566741] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.566926] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.567091] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.567281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.567439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.567609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.567727] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.567889] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.567975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.568094] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.568256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.568446] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.568634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.568731] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.568841] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.568922] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.569032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.569148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.569262] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.569370] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.569482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.569595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.569682] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.569790] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.569873] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.569981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.570091] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.570171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.570285] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.570439] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.570545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.570629] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.570738] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.570920] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.571081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.571162] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.571328] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.571437] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.571628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.571738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.571840] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.572031] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.572200] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.572383] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.572564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.572737] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.572927] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.573221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.573303] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.573488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.573593] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.573753] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.573861] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.573944] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.574139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.574219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.574331] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.574505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.574613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.574804] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.574895] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.575004] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.577024] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.577195] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.577387] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.577552] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.577711] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.577823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.577905] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.578049] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.578135] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.578226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.578314] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.578454] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.578593] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.578737] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.578820] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.578909] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.579053] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.579203] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.579340] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.579424] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.579595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.579702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.579784] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.579890] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.580047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.580228] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.580338] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.580507] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.580695] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.580890] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.581046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.581131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.581245] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.581409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.581607] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.581694] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.581862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.581974] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.582146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.582251] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.582406] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.582519] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.582632] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.582798] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.582967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.583161] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.583326] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.583487] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.583568] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.583735] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.583930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.584090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.584251] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.584420] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.584517] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.584682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.584844] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.584951] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.585128] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.585239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.585344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.585450] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.585552] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.585631] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.585794] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.585958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.586070] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.586242] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.586405] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.586573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.586680] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.586764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.586938] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.587109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.587221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.587334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.587444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.587524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.587714] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.587791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.587900] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.588095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.588212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.588319] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.588434] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.588603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.588686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.588786] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.588887] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.588990] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.589154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.589252] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.589355] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.589513] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.589673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.589776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.589884] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.589990] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.590103] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.590203] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.590306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.590470] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.590578] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.590744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.590911] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.591021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.591132] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.591294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.591398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.591507] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.591691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.591808] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.591973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.592161] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.592317] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.592478] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.592658] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.592763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.592876] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.592984] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.593090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.595189] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.595307] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.595396] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.595576] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.595678] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.595868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.595965] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.596108] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.596247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.596332] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.596423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.596509] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.596660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.596741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.596824] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.596968] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.597113] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.597200] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.597288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.597373] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.597515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.597601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.597786] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.597891] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.597976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.598084] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.598256] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.598365] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.598539] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.598701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.598807] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.598916] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.599033] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.599198] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.599376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.599483] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.599564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.599728] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.599911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.600076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.600188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.600292] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.600460] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.600633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.600740] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.600851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.600957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.601063] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.601239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.601345] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.601516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.601680] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.601781] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.601938] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.602104] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.602216] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.602324] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.602431] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.602543] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.602704] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.602790] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.602895] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.603089] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.603254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.603344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.603443] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.603542] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.603657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.603765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.603870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.603949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.604053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.604163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.604246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.604346] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.604533] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.604626] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.604732] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.604817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.605007] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.605117] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.605223] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.605387] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.605572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.605679] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.605847] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.606026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.606141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.606310] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.606427] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.606613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.606723] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.606833] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.606937] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.607133] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.607245] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.607327] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.607433] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.607544] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.607723] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.607882] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.607998] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.608213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.608300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.608412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.608499] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.608690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.608863] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.609025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.609131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.609217] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.609320] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.609427] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.609531] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.609709] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.609895] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.610061] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.610249] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.610357] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.610467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.610556] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.610662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.610825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.610923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.611036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.611147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.611254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.611360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.611530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.611611] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.611780] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.613955] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.614133] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.614289] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.614487] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.614656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.614739] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.614822] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.614965] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.615109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.615197] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.615338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.615432] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.615567] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.615705] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.615845] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.615933] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.616012] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.616100] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.616185] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.616322] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.616492] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.616603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.616689] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.616793] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.616896] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.616986] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.617163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.617335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.617435] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.617606] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.617786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.617949] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.618110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.618283] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.618444] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.618631] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.618823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.618929] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.619106] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.619189] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.619376] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.619550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.619730] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.619894] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.620047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.620247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.620327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.620496] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.620656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.620819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.620930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.621016] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.621192] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.621356] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.621522] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.621705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.621784] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.621893] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.622060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.622165] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.622334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.622439] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.622519] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.622671] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.622772] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.622851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.622962] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.623129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.623285] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.623458] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.623645] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.623808] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.623918] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.624082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.624254] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.624412] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.624601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.624771] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.624938] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.625047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.625211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.625317] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.625488] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.625672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.625784] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.625953] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.626121] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.626283] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.626447] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.626613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.626782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.626951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.627062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.627222] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.627381] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.627467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.627629] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.627807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.627973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.628090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.628254] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.628422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.628527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.628691] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.628869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.628949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.629055] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.629169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.629248] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.629352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.631363] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.631521] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.631716] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.631903] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.632015] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.632131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.632216] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.632302] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.632436] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.632517] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.632603] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.632749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.632833] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.632913] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.633060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.633157] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.633300] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.633434] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.633520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.633606] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.633758] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.633925] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.634104] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.634265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.634370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.634552] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.634653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.634760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.634858] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.635034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.635140] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.635309] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.635415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.635579] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.635752] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.635913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.636021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.636109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.636294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.636397] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.636555] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.636644] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.636808] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.636977] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.637106] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.637269] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.637448] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.637642] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.637725] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.637827] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.637994] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.638094] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.638204] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.638374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.638535] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.638630] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.638822] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.638978] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.639187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.639266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.639371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.639474] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.639585] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.639750] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.639915] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.640006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.640114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.640216] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.640378] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.640497] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.640654] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.640763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.640866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.640972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.641053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.641160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.641236] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.641340] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.641442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.641613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.641780] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.641934] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.642053] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.642249] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.642355] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.642525] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.642606] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.642802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.642914] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.643022] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.643109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.643216] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.643327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.643494] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.643598] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.643715] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.643906] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.644019] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.644303] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.644470] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.644577] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.644661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.644766] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.644932] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.645038] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.645143] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.645319] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.645488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.645599] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.645757] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.645867] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.646067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.646169] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.646329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.646436] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.646605] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.646765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.646865] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.646976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.647090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.647178] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.647289] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.647480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.647594] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.647674] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.647779] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.649845] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.649955] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.650118] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.650230] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.650395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.650498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.650603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.650682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.650825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.650909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.650998] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.651084] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.651169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.651257] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.651397] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.651541] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.651680] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.651763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.651845] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.651923] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.652067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.652154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.652237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.652356] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.652509] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.652699] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.652785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.652889] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.653074] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.653182] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.653340] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.653537] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.653694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.653803] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.653908] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.654000] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.654102] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.654218] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.654299] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.654495] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.654694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.654781] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.654887] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.655071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.655239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.655345] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.655512] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.655679] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.655781] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.655951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.656052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.656156] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.656325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.656415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.656603] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.656785] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.656961] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.657079] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.657180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.657264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.657369] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.657543] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.657722] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.657809] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.657914] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.658016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.658129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.658296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.658382] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.658568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.658649] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.658754] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.658949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.659035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.659154] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.659324] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.659487] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.659596] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.659683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.659799] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.659994] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.660102] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.660214] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.660295] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.660452] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.660642] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.660753] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.660935] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.661093] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.661259] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.661362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.661530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.661640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.661745] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.661910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.662017] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.662116] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.662282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.662390] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.662498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.662602] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.662700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.662812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.662989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.663104] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.663271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.663355] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.663457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.663570] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.663659] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.663772] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.663930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.664032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.664144] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.664311] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.664424] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.664536] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.664627] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.664818] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.664983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.665088] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.665255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.665358] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.665544] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.665697] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.665856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.666021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.666139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.666257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.668300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.668409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.668569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.668675] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.668858] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.669034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.669129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.669275] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.669361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.669445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.669531] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.669616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.669704] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.669792] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.669873] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.669954] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.670100] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.670182] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.670267] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.670406] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.670554] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.670635] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.670720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.670826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.670988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.671109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.671220] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.671383] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.671496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.671602] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.671685] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.671798] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.671986] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.672157] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.672263] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.672368] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.672554] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.672703] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.672890] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.673003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.673173] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.673263] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.673452] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.673649] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.673830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.673937] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.674103] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.674265] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.674454] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.674644] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.674812] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.674963] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.675072] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.675229] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.675400] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.675565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.675658] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.675824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.675910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.676016] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.676180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.676292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.676393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.676473] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.676576] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.676734] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.676899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.677007] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.677090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.677256] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.677364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.677529] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.677698] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.677855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.677957] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.678126] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.678236] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.678345] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.678505] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.678668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.678771] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.678886] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.679059] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.679172] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.679277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.679385] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.679581] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.679741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.679851] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.680019] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.680196] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.680302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.680414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.680500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.680603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.680684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.680790] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.680959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.681071] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.681183] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.681349] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.681512] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.681700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.681807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.681969] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.682082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.682272] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.682445] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.682606] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.682775] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.682937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.683051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.683242] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.683352] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.683546] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.683663] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.683749] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.683930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.684098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.684211] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.684370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.684539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.686606] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.686710] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.686871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.686982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.687150] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.687318] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.687406] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.687551] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.687633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.687718] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.687801] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.687944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.688033] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.688127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.688263] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.688398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.688484] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.688625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.688711] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.688859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.688940] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.689051] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.689162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.689251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.689360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.689523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.689630] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.689713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.689814] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.689993] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.690175] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.690360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.690451] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.690559] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.690742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.690905] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.690991] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.691096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.691201] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.691367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.691479] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.691639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.691744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.691935] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.692045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.692150] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.692319] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.692482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.692594] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.692701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.692805] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.692971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.693056] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.693246] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.693410] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.693505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.693596] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.693701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.693817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.694006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.694097] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.694211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.694369] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.694478] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.694644] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.694826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.694932] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.695016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.695130] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.695295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.695397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.695504] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.695613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.695697] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.695810] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.695986] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.696147] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.696324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.696522] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.696684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.696790] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.696899] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.697069] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.697229] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.697389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.697493] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.697658] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.697766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.697870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.698045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.698159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.698270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.698376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.698481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.698583] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.698688] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.698855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.698945] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.699103] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.699197] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.699360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.699465] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.699572] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.699742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.699854] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.700026] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.700190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.700365] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.700532] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.700714] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.700812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.700991] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.701173] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.701280] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.701456] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.701625] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.701802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.701896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.702084] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.702188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.702300] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.702474] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.702640] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.702811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.704850] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.705012] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.705116] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.705226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.705311] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.705467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.705578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.705661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.705747] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.705885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.705960] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.706100] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.706241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.706328] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.706463] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.706599] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.706732] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.706879] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.707019] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.707105] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.707185] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.707353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.707544] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.707714] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.707831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.708004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.708199] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.708314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.708413] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.708586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.708682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.708845] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.708950] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.709048] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.709222] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.709324] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.709404] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.709574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.709750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.709861] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.710057] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.710141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.710320] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.710486] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.710592] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.710689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.710853] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.711021] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.711201] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.711363] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.711521] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.711629] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.711817] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.711904] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.712087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.712194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.712288] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.712446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.712552] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.712721] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.712825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.712929] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.713099] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.713266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.713371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.713470] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.713637] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.713805] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.713892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.713994] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.714109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.714265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.714372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.714466] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.714573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.714681] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.714850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.714954] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.715064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.715145] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.715247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.715415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.715696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.715865] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.715976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.716063] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.716255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.716360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.716456] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.716625] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.716794] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.716904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.717027] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.717194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.717380] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.717551] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.717651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.717819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.717930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.718100] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.718205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.718372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.718461] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.718641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.718748] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.718926] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.719006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.719121] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.719231] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.719333] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.719500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.719607] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.719713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.719817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.719982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.720070] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.720239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.720347] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.720455] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.720620] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.720729] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.720906] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.721019] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.723076] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.723241] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.723401] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.723509] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.723614] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.723723] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.723892] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.724039] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.724136] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.724280] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.724365] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.724446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.724531] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.724677] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.724823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.724910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.724989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.725072] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.725210] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.725359] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.725509] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.725608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.725725] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.725886] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.725997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.726176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.726278] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.726437] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.726550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.726656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.726818] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.726920] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.727028] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.727184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.727292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.727368] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.727467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.727658] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.727768] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.727855] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.728029] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.728138] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.728301] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.728414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.728526] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.728609] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.728802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.728889] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.729081] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.729242] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.729432] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.729595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.729702] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.729861] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.730035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.730141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.730333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.730419] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.730606] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.730716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.730795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.730984] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.731064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.731176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.731285] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.731401] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.731510] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.731681] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.731846] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.731951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.732068] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.732234] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.732314] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.732508] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.732592] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.732702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.732785] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.732979] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.733148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.733249] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.733332] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.733432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.733541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.733650] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.733738] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.733918] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.734034] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.734217] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.734369] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.734542] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.734640] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.734810] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.734970] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.735081] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.735258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.735448] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.735636] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.735790] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.735876] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.735982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.736176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.736280] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.736391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.736497] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.736610] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.736777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.736937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.737041] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.737126] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.737298] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.737484] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.737569] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.737740] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.737845] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.738012] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.738189] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.738360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.738520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.738624] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.738735] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.738848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.738937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.739048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.739161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.739271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.739384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.741422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.741524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.741634] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.741801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.741906] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.742106] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.742211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.742297] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.742444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.742529] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.742673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.742756] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.742901] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.742989] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.743134] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.743276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.743362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.743452] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.743541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.743628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.743713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.743791] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.743963] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.744143] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.744308] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.744422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.744507] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.744684] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.744857] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.744965] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.745077] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.745242] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.745353] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.745431] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.745624] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.745785] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.745939] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.746051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.746235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.746333] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.746517] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.746626] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.746727] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.746899] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.747067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.747176] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.747350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.747513] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.747681] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.747794] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.747962] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.748070] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.748177] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.748338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.748449] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.748551] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.748643] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.748748] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.748911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.749099] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.749263] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.749438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.749549] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.749646] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.749806] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.749973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.750139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.750232] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.750393] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.750573] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.750733] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.750930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.751108] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.751211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.751316] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.751424] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.751529] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.751690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.751864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.752029] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.752201] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.752306] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.752413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.752519] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.752690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.752869] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.753036] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.753201] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.753363] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.753524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.753718] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.753882] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.753997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.754186] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.754284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.754379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.754553] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.754722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.754892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.755004] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.755121] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.755234] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.755391] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.755549] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.755721] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.755826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.755908] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.756087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.756198] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.756361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.756442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.756554] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.756722] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.756833] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.757006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.757119] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.757219] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.757376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.757489] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.757571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.759715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.759823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.759942] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.760099] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.760286] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.760463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.760547] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.760684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.760764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.760894] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.761047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.761196] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.761340] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.761476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.761568] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.761705] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.761844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.761982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.762121] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.762226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.762335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.762449] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.762610] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.762775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.762875] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.763052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.763153] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.763253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.763355] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.763470] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.763556] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.763714] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.763884] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.764053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.764169] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.764333] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.764495] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.764657] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.764830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.764941] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.765052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.765165] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.765273] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.765440] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.765550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.765719] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.765819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.765928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.766087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.766195] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.766384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.766463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.766628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.766738] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.766902] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.767071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.767245] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.767414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.767526] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.767635] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.767809] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.767918] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.768036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.768149] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.768257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.768368] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.768452] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.768641] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.768750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.768834] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.768942] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.769111] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.769300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.769385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.769573] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.769736] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.769815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.769929] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.770022] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.770194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.770391] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.770545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.770654] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.770847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.770949] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.771134] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.771308] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.771485] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.771590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.771695] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.771809] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.771968] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.772141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.772312] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.772473] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.772580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.772766] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.772927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.773035] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.773193] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.773352] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.773509] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.773617] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.773785] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.773935] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.774107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.774216] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.774386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.774500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.774596] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.774753] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.774919] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.775084] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.775253] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.775413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.775521] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.777577] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.777749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.777863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.777959] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.778119] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.778289] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.778430] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.778511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.778656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.778790] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.778938] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.779027] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.779170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.779314] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.779454] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.779590] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.779739] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.779875] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.780046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.780130] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.780317] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.780487] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.780649] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.780819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.780926] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.781099] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.781265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.781372] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.781550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.781716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.781819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.781899] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.782077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.782187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.782276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.782447] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.782553] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.782667] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.782831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.783006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.783121] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.783203] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.783371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.783487] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.783652] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.783759] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.783870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.783961] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.784148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.784229] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.784395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.784508] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.784615] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.784716] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.784880] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.785082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.785241] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.785407] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.785565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.785674] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.785840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.785947] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.786114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.786225] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.786336] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.786447] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.786556] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.786664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.786773] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.786858] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.787060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.787144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.787334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.787446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.787645] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.787818] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.787973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.788059] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.788225] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.788388] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.788496] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.788667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.788770] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.788944] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.789134] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.789305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.789420] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.789598] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.789789] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.789874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.790064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.790146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.790329] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.790480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.790639] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.790812] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.790917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.791028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.791114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.791222] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.791384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.791491] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.791655] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.791816] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.791927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.792011] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.792114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.792227] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.792333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.792409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.792515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.792623] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.792715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.792823] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.792995] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.793109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.793221] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.793382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.793467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.795661] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.795829] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.795990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.796162] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.796348] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.796480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.796621] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.796772] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.796860] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.796946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.797037] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.797120] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.797205] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.797286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.797369] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.797453] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.797538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.797631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.797718] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.797855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.797939] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.798026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.798140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.798223] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.798333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.798434] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.798527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.798695] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.798865] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.798974] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.799066] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.799229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.799332] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.799440] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.799624] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.799808] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.799911] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.800042] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.800156] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.800262] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.800376] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.800536] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.800648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.800750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.800850] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.801025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.801133] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.801244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.801352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.801461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.801571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.801740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.801913] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.802079] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.802187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.802298] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.802418] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.802575] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.802684] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.802846] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.803040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.803149] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.803260] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.803347] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.803458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.803563] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.803665] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.803831] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.804024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.804130] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.804231] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.804407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.804501] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.804605] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.804691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.804807] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.804909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.805022] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.805191] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.805304] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.805408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.805511] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.805604] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.805710] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.805871] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.806063] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.806170] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.806280] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.806443] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.806605] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.806768] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.806958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.807072] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.807235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.807336] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.807523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.807635] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.807798] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.807964] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.808152] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.808343] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.808448] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.808623] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.808785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.808894] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.809060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.809171] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.809331] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.809499] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.809611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.809698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.809807] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.809914] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.810072] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.810179] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.810265] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.810466] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.810550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.810657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.810763] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.810943] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.811109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.811211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.811383] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.811546] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.811650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.811816] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.811989] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.812153] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.814271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.814382] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.814551] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.814718] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.814826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.814916] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.815003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.815090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.815181] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.815267] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.815415] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.815500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.815585] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.815732] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.815819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.815975] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.816112] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.816198] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.816281] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.816375] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.816462] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.816548] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.816697] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.816885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.816980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.817141] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.817241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.817356] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.817542] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.817729] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.817832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.817922] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.818032] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.818219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.818305] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.818491] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.818572] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.818738] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.818920] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.819029] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.819136] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.819239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.819343] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.819503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.819591] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.819782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.819945] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.820110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.820274] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.820442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.820548] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.820735] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.820904] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.821093] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.821172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.821371] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.821538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.821624] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.821739] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.821924] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.822096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.822212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.822372] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.822532] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.822796] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.822905] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.823084] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.823195] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.823278] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.823382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.823491] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.823574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.823743] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.823858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.823966] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.824135] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.824294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.824401] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.824504] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.824676] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.824777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.824950] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.825052] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.825225] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.825313] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.825469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.825574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.825737] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.825921] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.826080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.826191] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.826308] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.826469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.826567] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.826677] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.826838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.826947] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.827111] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.827298] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.827382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.827489] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.827647] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.827761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.827871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.827981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.828090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.828253] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.828417] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.828530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.828618] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.828787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.828889] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.829008] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.829170] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.829274] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.829469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.829558] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.829745] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.829914] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.829992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.830096] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.830301] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.830461] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.832600] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.832710] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.832814] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.832923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.833007] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.833116] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.833285] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.833418] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.833551] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.833688] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.833764] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.833850] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.833995] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.834136] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.834280] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.834364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.834447] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.834523] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.834668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.834752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.834837] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.834921] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.835121] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.835278] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.835467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.835630] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.835739] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.835831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.835943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.836047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.836215] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.836391] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.836562] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.836717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.836820] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.836928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.837104] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.837207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.837372] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.837559] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.837668] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.837827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.837934] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.838098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.838181] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.838348] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.838526] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.838639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.838751] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.838862] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.839021] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.839195] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.839275] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.839384] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.839540] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.839654] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.839816] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.839924] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.840094] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.840201] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.840307] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.840479] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.840641] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.840808] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.840918] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.841085] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.841194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.841299] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.841464] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.841650] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.841737] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.841850] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.842016] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.842196] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.842281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.842464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.842550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.842655] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.842763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.842870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.843038] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.843147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.843260] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.843343] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.843511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.843706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.843791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.843898] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.844008] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.844173] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.844339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.844528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.844641] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.844808] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.844976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.845140] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.845308] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.845498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.845612] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.845719] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.845883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.846069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.846178] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.846253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.846357] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.846442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.846545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.846665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.846770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.846879] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.847046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.847160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.847245] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.847359] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.847528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.847637] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.847808] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.847895] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.848005] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.848171] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.848334] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.848513] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.848594] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.850668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.850775] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.850933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.851111] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.851218] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.851393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.851494] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.851582] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.851721] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.851808] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.851896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.852038] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.852125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.852212] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.852352] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.852498] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.852638] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.852777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.852859] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.853012] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.853178] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.853337] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.853496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.853604] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.853715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.853809] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.853992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.854098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.854188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.854297] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.854475] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.854641] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.854823] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.854982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.855144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.855299] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.855399] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.855590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.855676] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.855782] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.855873] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.856045] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.856209] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.856322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.856424] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.856600] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.856694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.856804] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.856907] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.857094] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.857273] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.857443] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.857597] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.857761] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.857919] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.858013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.858197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.858281] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.858396] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.858675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.858775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.858856] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.858976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.859085] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.859182] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.859295] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.859460] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.859570] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.859744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.859848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.859951] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.860117] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.860213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.860320] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.860396] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.860504] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.860666] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.860776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.860883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.861041] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.861141] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.861239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.861335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.861448] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.861620] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.861726] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.861897] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.862093] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.862256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.862420] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.862520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.862632] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.862746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.862831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.863019] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.863206] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.863379] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.863485] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.863653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.863760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.863868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.864031] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.864222] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.864379] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.864489] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.864597] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.864761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.864846] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.864952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.865117] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.865220] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.865397] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.865587] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.865750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.865859] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.866031] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.866192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.866296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.866383] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.866572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.866680] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.866852] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.868930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.869039] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.869213] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.869376] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.869530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.869638] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.869718] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.869859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.869949] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.870091] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.870177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.870266] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.870399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.870488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.870575] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.870718] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.870852] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.871002] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.871144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.871276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.871381] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.871556] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.871660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.871746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.871858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.871973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.872132] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.872295] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.872473] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.872555] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.872655] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.872759] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.872921] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.873104] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.873205] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.873292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.873405] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.873506] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.873657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.873747] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.873856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.874034] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.874200] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.874306] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.874475] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.874650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.874814] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.874983] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.875149] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.875261] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.875372] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.875563] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.875729] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.875892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.876002] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.876107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.876217] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.876330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.876419] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.876528] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.876707] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.876795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.876906] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.876999] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.877108] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.877201] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.877309] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.877475] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.877562] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.877674] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.877847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.877948] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.878052] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.878220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.878326] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.878407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.878519] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.878677] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.878874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.878988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.879092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.879250] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.879362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.879463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.879569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.879674] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.879786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.879965] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.880075] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.880185] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.880342] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.880539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.880626] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.880734] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.880918] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.881083] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.881276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.881390] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.881544] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.881635] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.881749] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.881938] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.882020] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.882219] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.882377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.882482] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.882680] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.882761] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.882945] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.883051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.883214] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.883379] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.883490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.883592] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.883753] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.883839] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.884017] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.884129] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.884225] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.884322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.884422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.884532] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.884631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.884736] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.884838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.884929] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.885046] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.887202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.887305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.887410] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.887527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.887640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.887745] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.887936] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.888021] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.888158] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.888244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.888327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.888462] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.888605] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.888691] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.888831] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.888972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.889062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.889202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.889283] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.889420] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.889503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.889592] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.889701] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.889875] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.890050] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.890220] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.890380] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.890488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.890573] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.890756] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.890866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.890952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.891129] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.891230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.891340] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.891516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.891616] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.891786] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.891881] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.892062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.892159] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.892338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.892455] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.892561] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.892673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.892754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.892867] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.893031] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.893191] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.893375] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.893457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.893564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.893857] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.894022] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.894183] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.894353] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.894457] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.894622] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.894819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.894982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.895146] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.895325] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.895495] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.895687] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.895854] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.896010] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.896178] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.896282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.896386] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.896549] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.896713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.896827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.896919] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.897090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.897202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.897308] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.897406] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.897578] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.897749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.897833] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.898003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.898163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.898268] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.898433] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.898600] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.898686] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.898858] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.899040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.899149] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.899327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.899490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.899603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.899715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.899801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.899905] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.900098] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.900266] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.900429] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.900633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.900722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.900883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.901001] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.901116] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.901273] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.901370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.901564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.901719] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.901820] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.901997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.902151] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.902325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.902429] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.902534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.902644] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.902815] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.902980] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.903091] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.903259] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.905329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.905438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.905523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.905633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.905741] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.905896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.906066] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.906150] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.906233] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.906322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.906408] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.906545] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.906681] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.906816] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.906964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.907044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.907129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.907266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.907351] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.907494] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.907631] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.907800] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.907911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.908097] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.908209] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.908291] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.908400] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.908569] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.908754] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.908949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.909039] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.909213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.909325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.909432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.909521] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.909715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.909825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.909910] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.910025] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.910187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.910295] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.910467] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.910618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.910724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.910879] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.911060] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.911172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.911330] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.911498] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.911662] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.911755] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.911854] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.912021] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.912199] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.912302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.912378] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.912571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.912758] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.912920] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.913028] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.913200] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.913363] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.913524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.913629] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.913798] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.913899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.913980] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.914097] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.914263] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.914349] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.914542] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.914647] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.914820] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.914988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.915183] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.915268] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.915378] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.915548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.915627] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.915736] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.915844] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.916011] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.916172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.916326] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.916435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.916542] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.916716] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.916911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.917084] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.917244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.917353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.917514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.917622] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.917785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.917867] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.917981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.918170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.918337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.918447] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.918554] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.918666] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.918756] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.918852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.918973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.919062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.919168] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.919273] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.919436] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.919543] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.919706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.919786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.919954] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.920142] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.920309] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.920416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.920494] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.920599] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.920786] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.920869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.920973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.921073] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.921246] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.923432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.923531] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.923641] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.923834] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.923942] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.924111] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.924262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.924397] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.924540] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.924680] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.924766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.924856] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.924946] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.925087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.925174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.925260] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.925399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.925486] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.925570] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.925654] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.925804] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.925910] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.926071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.926229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.926332] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.926494] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.926663] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.926772] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.926936] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.927027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.927126] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.927237] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.927412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.927523] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.927688] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.927863] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.928030] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.928214] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.928391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.928493] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.928606] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.928706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.928795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.928907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.929003] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.929183] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.929346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.929442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.929627] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.929791] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.930082] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.930191] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.930360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.930525] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.930634] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.930802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.930888] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.930996] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.931162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.931269] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.931436] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.931627] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.931818] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.931931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.932025] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.932187] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.932362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.932442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.932550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.932712] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.932870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.933042] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.933146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.933301] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.933415] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.933503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.933693] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.933857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.934045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.934135] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.934240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.934328] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.934434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.934603] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.934795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.934964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.935051] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.935161] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.935347] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.935512] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.935590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.935700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.935809] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.935915] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.936002] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.936113] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.936300] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.936454] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.936625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.936710] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.936814] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.937005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.937109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.937205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.937358] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.937511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.937682] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.937794] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.937906] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.938070] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.938165] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.938271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.938380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.938575] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.938687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.938801] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.938977] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.939080] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.939249] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.939336] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.939446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.939556] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.941692] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.941870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.941960] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.942070] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.942187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.942295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.942403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.942483] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.942620] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.942770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.942857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.943004] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.943089] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.943171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.943255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.943333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.943412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.943498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.943586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.943671] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.943758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.943840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.943929] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.944013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.944184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.944264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.944370] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.944479] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.944582] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.944772] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.944954] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.945117] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.945285] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.945453] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.945619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.945721] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.945826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.945934] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.946045] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.946230] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.946414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.946529] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.946637] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.946741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.946845] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.947015] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.947120] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.947226] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.947395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.947507] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.947683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.947788] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.947870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.947988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.948140] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.948305] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.948466] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.948654] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.948775] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.948945] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.949119] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.949306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.949472] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.949662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.949824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.949935] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.950040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.950125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.950231] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.950390] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.950492] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.950682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.950847] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.951016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.951125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.951207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.951366] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.951558] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.951714] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.951875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.951950] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.952110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.952271] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.952435] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.952602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.952786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.952977] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.953152] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.953263] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.953424] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.953510] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.953628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.953710] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.953905] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.954086] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.954246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.954352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.954445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.954547] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.954734] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.954903] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.955061] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.955151] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.955265] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.955425] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.955589] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.955677] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.955790] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.955951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.956062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.956162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.956276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.956377] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.956551] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.956717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.956815] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.956988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.957089] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.957193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.957298] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.957464] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.957616] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.957778] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.959946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.960051] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.960160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.960267] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.960432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.960516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.960625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.960713] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.960858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.960947] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.961082] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.961163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.961247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.961395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.961483] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.961626] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.961768] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.961915] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.962046] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.962184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.962275] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.962389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.962502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.962610] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.962769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.962886] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.963040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.963151] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.963260] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.963370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.963537] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.963644] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.963748] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.963848] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.964002] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.964182] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.964353] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.964514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.964680] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.964852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.964951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.965044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.965158] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.965365] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.965553] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.965709] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.965824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.965931] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.966100] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.966300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.966384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.966494] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.966593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.966707] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.966815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.966925] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.967095] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.967262] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.967350] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.967456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.967538] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.967709] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.967817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.968005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.968112] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.968276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.968436] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.968549] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.968656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.968822] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.968930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.969013] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.969123] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.969315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.969422] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.969611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.969717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.969798] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.969906] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.970073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.970185] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.970289] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.970457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.970573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.970683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.970770] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.970968] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.971128] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.971213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.971329] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.971520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.971601] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.971713] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.971908] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.972025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.972114] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.972293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.972385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.972560] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.972667] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.972838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.972942] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.973050] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.973160] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.973317] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.973500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.973611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.973692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.973864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.974053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.974152] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.974239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.974346] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.974539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.974622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.974724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.974841] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.975002] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.975189] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.975276] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.975455] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.975621] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.975795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.975993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.976075] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.976235] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.978352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.978456] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.978624] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.978710] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.978819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.978931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.979040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.979128] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.979272] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.979359] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.979441] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.979580] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.979661] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.979813] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.979903] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.980034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.980120] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.980262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.980407] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.980541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.980628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.980712] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.980818] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.980936] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.981104] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.981298] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.981456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.981559] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.981662] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.981776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.981881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.981986] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.982067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.982172] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.982282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.982367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.982473] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.982631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.982745] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.982913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.983023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.983128] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.983296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.983409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.983521] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.983628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.983745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.983830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.983939] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.984113] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.984278] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.984465] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.984578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.984683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.984788] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.984982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.985094] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.985203] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.985312] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.985470] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.985639] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.985804] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.986003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.986088] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.986272] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.986388] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.986495] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.986600] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.986770] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.986931] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.987084] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.987254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.987361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.987468] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.987569] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.987740] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.987846] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.988042] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.988146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.988300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.988382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.988498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.988607] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.988691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.988802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.988917] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.989077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.989183] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.989288] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.989451] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.989618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.989723] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.989892] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.990051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.990250] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.990354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.990440] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.990628] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.990802] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.990971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.991088] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.991190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.991289] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.991393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.991503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.991615] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.991720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.991797] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.991904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.992006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.992115] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.992281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.992438] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.992603] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.992771] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.992887] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.992973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.993077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.993187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.993296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.993385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.993555] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.993724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.993898] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.994002] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.994113] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.994230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.994338] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.994521] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.994632] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  446.994800] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.996959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.997068] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.997250] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.997365] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.997475] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.997640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.997727] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.997811] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.997950] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.998030] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.998169] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.998317] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  446.998451] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.998593] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  446.998739] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  446.998878] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  446.998959] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  446.999096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.999187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.999275] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.999361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  446.999467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  446.999568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  446.999658] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  446.999765] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  446.999964] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.000136] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.000424] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.000587] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.000701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.000791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.000905] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.001016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.001103] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.001271] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.001442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.001613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.001722] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.001833] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.001927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.002045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.002144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.002328] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.002533] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.002639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.002750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.002837] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.002943] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.003109] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.003275] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.003444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.003552] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.003737] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.003843] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.004012] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.004175] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.004279] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.004361] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.004554] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.004735] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.004899] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.005062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.005227] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.005407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.005514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.005622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.005730] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.005899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.005983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.006090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.006167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.006279] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.006442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.006549] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.006651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.006816] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.006921] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.007086] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.007199] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.007365] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.007524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.007692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.007858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.007953] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.008039] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.008147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.008262] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.008373] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.008538] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.008722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.008899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.009004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.009164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.009274] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.009457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.009538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.009643] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.009753] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.009840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.009951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.010062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.010170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.010340] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.010422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.010525] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.010615] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.010733] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.010925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.011028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.011140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.011245] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.011408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.011502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.011610] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.011781] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.011887] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.012060] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.012237] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.012415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.012601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.012791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.012904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.013018] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.013172] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.013343] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.015477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.015578] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.015755] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.015927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.016039] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.016146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.016291] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.016376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.016463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.016550] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.016683] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.016825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.016911] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.016993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.017077] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.017220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.017312] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.017402] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.017548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.017632] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.017776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.017866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.017978] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.018082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.018250] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.018416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.018518] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.018685] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.018880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.018991] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.019156] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.019260] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.019342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.019451] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.019638] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.019744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.019917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.020025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.020134] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.020301] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.020469] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.020628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.020732] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.020848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.020963] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.021126] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.021244] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.021408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.021515] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.021689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.021861] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.021973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.022164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.022271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.022362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.022472] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.022635] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.022822] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.022930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.023023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.023125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.023211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.023318] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.023403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.023508] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.023621] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.023722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.023888] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.023999] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.024099] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.024203] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.024305] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.024477] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.024643] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.024750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.024835] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.024948] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.025129] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.025246] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.025409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.025574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.025688] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.025872] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.025973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.026156] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.026268] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.026457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.026569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.026652] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.026836] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.026961] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.027069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.027174] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.027348] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.027504] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.027608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.027714] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.027883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.028041] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.028149] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.028319] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.028486] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.028656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.028842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.029002] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.029174] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.029362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.029519] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.029688] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.029792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.029986] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.030138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.030217] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.030396] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.030568] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.030722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.030920] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.031000] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.031107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.031265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.031349] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.031516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.031622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.033648] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.033823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.033923] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.034105] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.034251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.034347] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.034509] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.034657] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.034800] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.034940] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.035025] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.035160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.035236] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.035323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.035466] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.035614] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.035753] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.035839] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.035986] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.036246] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.036411] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.036569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.036681] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.036848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.036960] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.037130] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.037295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.037402] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.037559] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.037664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.037746] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.037937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.038045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.038125] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.038299] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.038400] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.038564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.038721] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.038888] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.038999] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.039155] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.039325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.039435] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.039599] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.039715] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.039873] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.039963] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.040153] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.040320] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.040492] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.040577] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.040765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.040877] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.041044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.041152] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.041313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.041409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.041518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.041608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.041719] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.041893] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.042061] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.042244] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.042411] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.042519] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.042679] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.042788] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.042874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.042988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.043151] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.043315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.043423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.043524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.043633] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.043797] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.043968] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.044134] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.044238] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.044432] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.044598] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.044758] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.044921] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.045029] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.045112] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.045219] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.045387] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.045499] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.045696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.045876] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.046047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.046237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.046348] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.046454] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.046623] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.046708] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.046817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.046985] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.047145] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.047249] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.047411] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.047573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.047663] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.047850] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.048041] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.048196] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.048364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.048520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.048624] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.048787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.048874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.049050] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.049215] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.049376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.051428] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.051537] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.051651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.051817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.051989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.052078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.052186] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.052278] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.052415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.052562] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.052703] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.052843] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.052988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.053076] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.053217] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.053302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.053386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.053469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.053551] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.053636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.053726] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.053814] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.053924] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.054032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.054131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.054220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.054330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.054435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.054538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.054645] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.054744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.054919] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.055004] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.055118] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.055207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.055370] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.055477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.055585] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.055746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.055853] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.056008] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.056195] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.056389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.056495] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.056660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.056765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.056882] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.057078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.057179] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.057287] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.057475] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.057591] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.057751] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.057862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.057970] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.058076] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.058246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.058350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.058509] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.058675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.058785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.058892] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.059063] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.059221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.059330] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.059494] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.059654] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.059817] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.060000] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.060167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.060267] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.060372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.060467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.060654] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.060758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.060875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.060957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.061057] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.061211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.061315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.061396] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.061586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.061696] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.061777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.061885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.062003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.062162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.062277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.062366] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.062539] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.062703] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.062818] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.062982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.063173] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.063284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.063370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.063568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.063682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.063871] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.064044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.064143] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.064251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.064337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.064457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.064568] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.064757] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.064917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.065029] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.065195] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.065352] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.065501] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.065608] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.065779] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.065958] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.066141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.066313] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.066497] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.066668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.066749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.066858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.066959] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.067148] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.067309] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.067410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.067573] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.067745] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.069822] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.069930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.070011] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.070116] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.070281] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.070483] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.070651] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.070735] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.070892] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.071033] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.071172] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.071252] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.071392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.071478] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.071625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.071708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.071844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.071987] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.072128] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.072271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.072382] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.072567] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.072684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.072776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.072891] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.072997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.073162] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.073339] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.073498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.073606] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.073688] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.073876] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.073960] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.074144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.074311] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.074471] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.074649] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.074758] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.074925] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.075079] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.075243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.075350] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.075467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.075648] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.075825] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.075995] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.076157] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.076347] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.076525] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.076639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.076749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.076840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.076953] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.077120] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.077284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.077367] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.077554] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.077638] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.077808] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.077970] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.078085] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.078275] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.078429] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.078598] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.078677] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.078782] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.078896] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.078982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.079090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.079174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.079281] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.079473] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.079636] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.079805] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.079904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.080007] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.080170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.080338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.080447] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.080555] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.080719] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.080883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.081051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.081213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.081315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.081414] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.081583] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.081776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.081890] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.082067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.082158] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.082265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.082351] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.082458] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.082621] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.082728] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.082896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.083054] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.083244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.083354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.083439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.083604] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.083717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.083825] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.083981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.084158] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.084322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.084430] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.084541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.084653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.084741] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.084931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.085041] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.085148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.085253] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.085425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.085532] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.085615] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.085782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.087925] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.088103] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.088266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.088375] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.088535] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.088700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.088785] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.088926] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.089014] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.089097] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.089186] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.089269] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.089356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.089435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.089521] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.089598] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.089683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.089768] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.089863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.089953] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.090037] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.090124] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.090266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.090347] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.090456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.090568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.090656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.090848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.090945] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.091111] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.091296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.091376] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.091570] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.091742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.091927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.092031] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.092145] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.092337] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.092526] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.092695] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.092881] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.093047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.093229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.093338] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.093497] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.093609] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.093776] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.093940] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.094050] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.094154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.094262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.094421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.094581] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.094665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.094773] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.094960] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.095047] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.095207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.095374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.095541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.095643] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.095809] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.095964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.096070] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.096225] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.096333] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.096502] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.096672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.096784] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.096981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.097148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.097234] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.097421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.097528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.097616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.097721] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.097877] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.097995] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.098074] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.098179] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.098283] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.098400] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.098484] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.098592] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.098768] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.098939] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.099135] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.099214] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.099321] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.099422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.099526] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.099687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.099781] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.099894] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.100004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.100167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.100274] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.100449] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.100551] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.100721] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.100898] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.101090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.101195] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.101386] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.101534] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.101685] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.101791] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.101961] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.102076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.102188] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.102371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.102450] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.102560] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.102670] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.102865] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.102946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.103050] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.103159] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.103334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.103443] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.103544] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.103633] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.103791] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.103977] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.106226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.106339] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.106495] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.106653] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.106838] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.107003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.107148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.107230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.107308] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.107446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.107531] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.107681] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.107826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.107909] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.108048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.108137] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.108226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.108314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.108395] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.108540] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.108616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.108727] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.108898] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.109001] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.109119] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.109277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.109362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.109528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.109639] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.109835] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.110003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.110107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.110191] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.110298] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.110463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.110627] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.110736] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.110844] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.110949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.111060] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.111227] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.111331] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.111435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.111550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.111632] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.111738] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.111936] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.112092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.112201] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.112282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.112393] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.112559] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.112667] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.112849] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.112950] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.113050] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.113208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.113367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.113475] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.113584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.113690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.113880] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.114046] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.114243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.114350] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.114454] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.114560] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.114652] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.114811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.114918] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.115102] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.115207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.115366] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.115476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.115560] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.115668] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.115859] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.116031] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.116197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.116302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.116413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.116518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.116601] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.116709] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.116873] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.117034] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.117204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.117313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.117412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.117508] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.117680] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.117780] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.117955] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.118048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.118154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.118270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.118380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.118543] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.118705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.118825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.118910] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.119089] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.119270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.119378] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.119479] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.119658] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.119823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.119910] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.120102] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.120267] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.120379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.120546] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.120656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.120821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.120932] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.121127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.121296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.121407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.121496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.121606] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.121704] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.121807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.121976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.122082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.122246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.122356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.122464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.122550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.124678] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.124883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.124971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.125073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.125176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.125276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.125383] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.125468] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.125614] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.125699] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.125837] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.125977] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.126067] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.126211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.126354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.126437] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.126520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.126612] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.126746] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.126890] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.126971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.127054] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.127215] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.127320] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.127503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.127608] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.127768] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.127952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.128037] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.128234] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.128315] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.128477] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.128669] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.128748] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.128856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.129022] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.129207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.129312] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.129398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.129511] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.129619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.129728] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.129898] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.130003] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.130157] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.130328] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.130439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.130601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.130769] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.130941] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.131048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.131153] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.131316] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.131430] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.131595] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.131759] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.131923] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.132114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.132224] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.132408] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.132581] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.132687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.132801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.132882] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.132988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.133073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.133186] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.133345] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.133501] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.133660] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.133856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.134024] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.134207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.134293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.134397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.134478] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.134586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.134691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.134783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.134899] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.135059] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.135229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.135341] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.135449] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.135557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.135673] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.135867] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.136034] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.136210] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.136317] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.136399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.136513] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.136682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.136847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.136940] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.137048] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.137224] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.137414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.137526] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.137699] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.137798] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.137912] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.137992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.138096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.138208] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.138323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.138503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.138584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.138690] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.138774] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.138877] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.138991] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.139098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.139202] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.139364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.139534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.139636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.139744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.139848] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.140008] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.140087] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.140270] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.140436] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.140541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.140646] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.140808] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.143094] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.143262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.143427] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.143626] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.143797] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.143880] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.144018] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.144165] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.144247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.144332] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.144418] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.144497] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.144577] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.144663] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.144819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.144959] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.145098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.145193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.145282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.145369] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.145528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.145616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.145719] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.145800] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.145905] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.146080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.146171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.146280] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.146387] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.146553] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.146664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.146763] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.146962] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.147071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.147232] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.147397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.147502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.147597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.147693] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.147863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.147973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.148079] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.148189] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.148301] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.148477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.148586] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.148759] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.148933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.149112] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.149279] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.149381] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.149485] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.149597] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.149762] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.149869] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.150032] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.150199] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.150313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.150421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.150525] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.150689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.150881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.150983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.151080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.151160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.151274] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.151443] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.151546] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.151624] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.151743] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.151908] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.152067] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.152252] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.152358] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.152529] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.152632] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.152798] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.152878] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.152991] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.153170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.153332] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.153437] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.153602] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.153708] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.153830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.153942] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.154114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.154224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.154329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.154442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.154544] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.154623] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.154787] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.154944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.155050] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.155203] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.155312] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.155421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.155586] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.155778] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.155856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.156021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.156128] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.156285] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.156466] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.156631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.156740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.156908] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.157096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.157209] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.157395] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.157552] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.157638] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.157742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.157849] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.158014] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.158207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.158377] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.158538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.158647] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.158818] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.158981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.159147] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.161213] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.161402] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.161569] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.161730] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.161890] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.161975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.162058] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.162196] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.162334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.162420] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.162505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.162583] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.162669] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.162820] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.162956] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.163097] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.163238] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.163318] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.163403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.163548] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.163714] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.163874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.164038] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.164148] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.164318] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.164481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.164586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.164691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.164784] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.164895] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.165093] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.165197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.165303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.165381] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.165544] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.165657] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.165823] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.165989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.166102] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.166216] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.166372] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.166530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.166609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.166715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.166838] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.166993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.167106] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.167274] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.167432] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.167623] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.167741] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.167906] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.168094] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.168210] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.168298] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.168413] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.168575] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.168688] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.168796] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.168905] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.169063] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.169227] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.169389] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.169576] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.169738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.169853] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.170013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.170183] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.170290] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.170447] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.170602] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.170713] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.170885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.170985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.171090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.171261] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.171371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.171474] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.171586] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.171760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.171875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.171960] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.172066] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.172182] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.172350] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.172434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.172627] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.172716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.172825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.172918] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.173098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.173185] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.173293] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.173465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.173629] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.173815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.173930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.174088] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.174277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.174391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.174476] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.174658] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.174763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.174872] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.175035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.175145] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.175302] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.175469] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.175655] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.175819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.176001] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.176161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.176274] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.176363] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.176477] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.176641] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.176812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.176979] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.177086] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.179205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.179382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.179470] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.179580] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.179740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.179902] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.180013] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.180144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.180287] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.180429] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.180517] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.180604] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.180746] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.180885] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.181020] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.181159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.181244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.181327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.181478] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.181625] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.181792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.181975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.182084] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.182241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.182339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.182516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.182607] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.182780] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.182950] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.183109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.183219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.183319] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.183418] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.183524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.183685] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.183774] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.183886] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.184061] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.184148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.184268] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.184367] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.184525] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.184689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.184863] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.185021] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.185190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.185297] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.185408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.185518] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.185692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.185867] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.186036] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.186222] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.186334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.186423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.186532] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.186712] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.186894] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.187003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.187108] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.187213] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.187385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.187542] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.187621] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.187814] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.187905] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.188003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.188114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.188223] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.188383] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.188483] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.188652] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.188742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.188851] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.189014] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.189127] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.189235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.189342] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.189499] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.189675] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.189871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.189981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.190153] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.190318] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.190487] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.190646] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.190844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.191041] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.191130] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.191317] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.191399] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.191586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.191694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.191777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.191884] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.191989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.192100] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.192258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.192419] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.192537] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.192626] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.192813] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.192986] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.193148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.193234] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.193401] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.193559] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.193717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.193905] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.193989] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.194180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.194355] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.194541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.194661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.194773] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.194883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.194966] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.195070] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.195154] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.197233] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.197338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.197449] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.197560] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.197755] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.197867] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.197974] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.198110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.198253] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.198378] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.198460] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.198599] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.198733] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.198869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.198954] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.199036] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.199180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.199314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.199400] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.199540] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.199707] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.199878] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.199991] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.200095] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.200262] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.200374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.200478] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.200648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.200759] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.200926] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.201092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.201205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.201367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.201442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.201630] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.201745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.201829] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.201930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.202095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.202198] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.202374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.202538] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.202706] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.202890] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.203052] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.203242] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.203413] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.203582] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.203683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.203769] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.203966] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.204134] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.204317] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.204426] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.204535] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.204648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.204771] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.204849] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.204954] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.205064] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.205234] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.205327] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.205428] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.205546] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.205710] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.205792] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.205895] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.206057] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.206143] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.206250] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.206367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.206477] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.206646] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.206816] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.206981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.207078] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.207245] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.207420] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.207524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.207642] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.207836] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.208004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.208183] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.208356] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.208521] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.208630] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.208789] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.208988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.209088] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.209263] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.209411] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.209574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.209742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.209929] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.210088] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.210172] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.210288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.210390] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.210497] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.210615] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.210773] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.210941] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.211100] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.211182] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.211285] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.211395] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.211571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.211736] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.211910] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.212078] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.212245] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.212424] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.212529] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.212628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.212734] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.212844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.213009] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.215205] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.215321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.215483] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.215668] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.215838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.215948] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.216085] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.216225] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.216358] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.216442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.216587] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.216672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.216760] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.216905] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.216988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.217076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.217163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.217249] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.217335] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.217486] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.217633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.217741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.217857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.218022] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.218186] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.218291] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.218458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.218574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.218659] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.218763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.218868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.219044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.219140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.219253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.219367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.219457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.219564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.219671] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.219865] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.219976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.220138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.220242] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.220396] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.220565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.220672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.220752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.220855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.220966] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.221140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.221250] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.221353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.221509] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.221618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.221722] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.221893] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.222082] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.222180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.222373] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.222478] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.222561] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.222675] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.222834] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.222945] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.223049] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.223224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.223309] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.223505] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.223698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.223802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.223889] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.224005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.224120] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.224288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.224399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.224504] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.224666] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.224776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.224873] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.224982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.225074] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.225253] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.225420] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.225534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.225631] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.225809] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.225974] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.226092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.226254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.226360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.226467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.226573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.226686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.226801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.226912] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.226998] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.227103] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.227213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.227321] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.227410] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.227523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.227637] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.227840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.227944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.228027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.228137] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.228231] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.228339] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.228514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.228676] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.228772] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.228956] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.229039] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.229227] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.229339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.229529] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.229637] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.229745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.229851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.229949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.230057] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.230163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.230267] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.230437] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.230543] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.230705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.230814] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.231003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.231109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.231211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.231375] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.231547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.231652] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.231735] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.231926] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.234030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.234114] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.234278] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.234462] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.234569] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.234740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.234877] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.235029] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.235167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.235247] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.235329] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.235471] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.235608] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.235744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.235885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.235967] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.236054] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.236138] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.236283] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.236370] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.236480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.236584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.236668] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.236850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.236959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.237068] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.237179] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.237339] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.237415] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.237518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.237597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.237706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.237822] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.237988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.238146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.238315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.238421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.238530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.238642] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.238751] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.238863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.238953] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.239059] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.239166] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.239278] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.239380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.239537] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.239648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.239760] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.239954] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.240121] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.240298] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.240479] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.240675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.240771] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.240928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.241100] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.241287] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.241397] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.241564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.241747] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.241935] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.242096] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.242205] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.242310] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.242466] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.242653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.242743] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.242913] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.243081] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.243247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.243419] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.243604] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.243692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.243864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.244030] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.244212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.244294] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.244463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.244622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.244728] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.244897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.245004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.245168] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.245343] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.245450] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.245608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.245724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.245887] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.246051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.246209] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.246304] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.246477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.246567] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.246732] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.246829] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.247012] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.247103] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.247218] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.247384] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.247541] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.247655] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.247830] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.247997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.248184] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.248354] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.248516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.248624] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.248709] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.248816] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.248892] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.249081] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.249248] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.249418] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.249698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.249785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.249897] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.252012] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.252175] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.252346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.252451] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.252614] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.252775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.252868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.252949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.253030] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.253170] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.253254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.253337] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.253472] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.253557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.253643] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.253791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.253873] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.254014] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.254162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.254251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.254337] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.254500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.254615] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.254782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.254945] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.255049] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.255137] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.255239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.255352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.255454] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.255557] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.255728] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.255828] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.255933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.256098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.256197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.256307] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.256471] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.256624] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.256780] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.256966] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.257135] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.257247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.257412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.257522] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.257603] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.257805] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.257916] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.258020] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.258187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.258292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.258400] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.258509] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.258616] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.258788] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.258961] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.259146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.259308] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.259479] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.259643] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.259754] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.259911] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.260007] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.260106] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.260207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.260322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.260429] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.260514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.260698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.260803] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.260973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.261077] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.261230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.261339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.261503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.261675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.261786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.261944] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.262109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.262273] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.262382] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.262546] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.262717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.262909] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.263088] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.263253] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.263420] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.263607] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.263687] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.263875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.263957] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.264139] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.264298] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.264383] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.264492] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.264661] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.264829] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.264937] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.265100] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.265205] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.265324] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.265400] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.265501] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.265584] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.265761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.265868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.265976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.266141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.266309] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.266418] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.266503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.266610] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.266783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.266890] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.266976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.267172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.267335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.267435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.267527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.267636] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.267801] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.267985] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.270148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.270255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.270364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.270478] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.270557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.270661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.270745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.270852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.270937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.271027] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.271168] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.271306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.271455] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.271599] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.271684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.271771] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.271919] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.272059] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.272200] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.272284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.272371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.272451] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.272547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.272662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.272847] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.273036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.273149] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.273337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.273443] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.273535] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.273634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.273738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.273818] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.273986] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.274093] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.274174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.274284] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.274468] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.274550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.274657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.274764] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.274848] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.275040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.275133] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.275235] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.275408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.275521] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.275684] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.275857] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.275964] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.276138] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.276325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.276435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.276545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.276653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.276741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.276854] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.277045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.277151] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.277233] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.277343] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.277457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.277567] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.277674] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.277778] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.277961] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.278130] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.278305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.278404] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.278514] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.278668] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.278783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.278870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.278988] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.279146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.279252] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.279411] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.279597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.279708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.279872] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.280061] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.280164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.280270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.280381] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.280543] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.280648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.280754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.280839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.280949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.281030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.281145] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.281251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.281363] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.281534] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.281719] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.281825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.281917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.282024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.282135] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.282246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.282339] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.282524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.282611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.282718] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.282883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.283057] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.283167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.283248] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.283357] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.283538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.283651] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.283813] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.283991] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.284099] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.284211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.284377] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.284644] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.284835] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.285006] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.285192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.285297] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.285382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.285485] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.285587] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.285685] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.285856] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.285965] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.286124] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.286233] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.286346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.286451] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.286555] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.286645] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.286802] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.288935] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.289039] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.289149] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.289262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.289446] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.289607] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.289753] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.289839] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.289992] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.290131] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.290265] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.290407] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.290545] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.290696] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.290778] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.290859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.290943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.291027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.291111] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.291193] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.291344] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.291527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.291721] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.291800] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.291956] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.292116] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.292310] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.292471] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.292555] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.292722] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.292828] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.292913] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.293085] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.293254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.293360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.293536] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.293645] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.293827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.293937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.294026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.294130] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.294296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.294380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.294563] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.294652] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.294812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.294980] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.295092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.295187] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.295362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.295469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.295584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.295701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.295782] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.295884] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.296044] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.296214] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.296323] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.296435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.296517] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.296714] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.296821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.296932] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.297093] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.297202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.297285] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.297390] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.297566] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.297730] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.297911] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.298016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.298095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.298199] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.298304] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.298487] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.298676] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.298852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.298937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.299043] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.299152] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.299259] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.299362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.299523] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.299696] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.299792] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.299903] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.300010] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.300192] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.300346] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.300507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.300610] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.300778] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.300882] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.301064] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.301227] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.301388] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.301560] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.301758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.301863] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.302044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.302163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.302329] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.302494] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.302660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.302766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.302874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.303032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.303120] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.303224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.303324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.303484] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.303594] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.303706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.303791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.303904] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.304077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.304171] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.304342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.304434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.304628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.304714] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.304825] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.306979] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.307064] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.307250] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.307411] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.307518] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.307674] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.307759] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.307906] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.307991] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.308129] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.308266] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.308405] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.308552] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.308695] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.308838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.308919] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.309011] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.309144] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.309282] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.309450] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.309560] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.309729] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.309897] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.310065] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.310256] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.310339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.310527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.310614] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.310788] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.310952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.311061] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.311222] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.311397] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.311562] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.311669] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.311843] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.311952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.312115] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.312225] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.312333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.312421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.312578] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.312749] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.312861] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.313031] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.313200] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.313313] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.313474] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.313581] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.313659] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.313851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.313936] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.314042] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.314217] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.314325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.314431] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.314515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.314622] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.314795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.314978] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.315086] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.315193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.315281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.315451] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.315551] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.315718] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.315885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.316002] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.316107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.316272] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.316382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.316490] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.316644] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.316752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.316861] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.316944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.317052] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.317236] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.317411] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.317568] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.317719] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.317826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.317929] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.318109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.318194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.318302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.318409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.318585] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.318746] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.318935] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.319023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.319130] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.319317] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.319481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.319591] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.319787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.319984] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.320156] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.320323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.320489] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.320580] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.320696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.320892] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.321056] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.321166] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.321362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.321526] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.321613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.321772] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.321958] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.322127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.322302] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.322472] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.322580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.322752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.322861] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.322971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.324967] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.325072] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.325166] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.325350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.325515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.325621] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.325791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.325878] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.325958] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.326092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.326235] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.326384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.326472] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.326617] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.326703] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.326796] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.326942] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.327016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.327092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.327176] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.327313] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.327471] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.327583] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.327688] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.327853] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.328022] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.328188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.328294] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.328485] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.328638] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.328802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.328880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.328981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.329150] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.329257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.329361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.329462] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.329555] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.329666] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.329777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.329956] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.330117] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.330224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.330325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.330432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.330521] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.330630] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.330715] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.330882] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.330985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.331092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.331261] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.331432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.331521] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.331635] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.331752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.331848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.331960] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.332067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.332176] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.332365] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.332534] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.332694] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.332865] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.333061] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.333169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.333278] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.333477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.333580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.333752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.333866] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.334022] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.334185] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.334295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.334407] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.334573] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.334761] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.334940] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.335100] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.335212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.335293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.335401] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.335483] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.335649] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.335819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.336003] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.336161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.336268] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.336374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.336481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.336585] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.336676] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.336777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.336866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.336975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.337084] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.337243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.337360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.337447] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.337554] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.337664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.337760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.337875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.337981] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.338084] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.338286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.338371] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.338534] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.338696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.338858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.338968] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.339074] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.339179] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.339291] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.339490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.339595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.339700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.339819] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.339973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.340154] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.340330] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.340515] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.340695] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.340868] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.341035] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.341212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.341290] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.343399] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.343568] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.343734] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.343848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.343964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.344071] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.344158] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.344292] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.344444] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.344534] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.344674] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.344757] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.344907] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.345051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.345190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.345335] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.345423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.345503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.345639] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.345719] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.345881] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.346034] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.346194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.346375] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.346479] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.346640] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.346804] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.346968] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.347136] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.347240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.347342] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.347511] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.347675] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.347762] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.347861] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.348026] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.348214] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.348299] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.348494] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.348671] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.348772] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.348931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.349026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.349143] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.349244] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.349411] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.349499] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.349603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.349696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.349867] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.349971] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.350080] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.350184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.350294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.350373] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.350481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.350592] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.350704] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.350796] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.350970] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.351078] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.351258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.351424] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.351526] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.351628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.351746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.351851] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.352041] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.352127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.352320] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.352432] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.352597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.352708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.352893] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.353068] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.353169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.353282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.353388] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.353500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.353603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.353714] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.353874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.353979] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.354151] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.354248] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.354362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.354522] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.354631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.354756] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.354911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.355077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.355195] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.355341] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.355531] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.355702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.355787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.355990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.356181] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.356348] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.356540] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.356694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.356795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.356957] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.357148] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.357305] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.357480] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.357670] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.357750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.357853] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.358016] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.358178] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.358287] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.358391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.358476] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.358662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.358833] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.358922] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.359013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.359186] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.359350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.361472] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.361580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.361758] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.361924] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.362041] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.362208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.362343] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.362480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.362571] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.362658] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.362797] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.362886] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.362966] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.363108] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.363257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.363346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.363432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.363516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.363596] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.363748] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.363830] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.363996] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.364101] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.364264] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.364433] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.364540] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.364654] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.364741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.364847] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.365006] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.365207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.365293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.365390] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.365581] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.365746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.365834] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.365939] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.366126] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.366235] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.366336] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.366493] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.366604] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.366761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.366868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.366944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.367052] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.367220] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.367399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.367509] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.367623] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.367715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.367823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.367907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.368008] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.368115] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.368232] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.368309] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.368420] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.368583] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.368702] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.368865] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.368974] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.369073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.369182] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.369347] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.369536] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.369650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.369819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.369972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.370087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.370190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.370300] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.370461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.370577] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.370778] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.370969] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.371161] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.371338] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.371490] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.371651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.371838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.371941] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.372096] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.372256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.372427] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.372590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.372702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.372806] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.372973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.373077] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.373240] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.373435] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.373594] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.373679] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.373844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.374008] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.374178] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.374290] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.374456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.374566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.374672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.374759] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.374879] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.375037] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.375197] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.375373] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.375561] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.375724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.375893] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.376055] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.376230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.376332] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.376503] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.376657] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.376816] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.376923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.377024] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.377189] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.377300] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.377467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.379488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.379593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.379700] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.379821] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.379983] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.380139] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.380306] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.380392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.380477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.380557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.380637] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.380724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.380810] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.380896] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.380971] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.381119] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.381261] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.381346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.381430] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.381516] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.381602] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.381689] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.381773] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.381855] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.382048] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.382213] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.382321] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.382431] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.382516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.382684] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.382865] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.382970] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.383073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.383181] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.383290] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.383394] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.383494] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.383593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.383686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.383801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.383879] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.383985] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.384174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.384288] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.384475] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.384654] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.384822] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.384985] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.385172] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.385282] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.385384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.385465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.385629] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.385744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.385845] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.386036] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.386228] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.386392] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.386593] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.386794] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.386909] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.387065] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.387230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.387342] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.387498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.387585] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.387701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.387799] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.387897] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.388005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.388124] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.388317] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.388409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.388517] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.388703] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.388792] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.388904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.388990] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.389103] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.389208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.389374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.389453] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.389561] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.389724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.389838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.389918] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.390102] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.390181] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.390296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.390402] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.390596] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.390760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.390866] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.391027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.391139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.391249] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.391355] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.391521] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.391622] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.391807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.392095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.392178] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.392367] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.392530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.392643] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.392813] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.392977] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.393159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.393267] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.393436] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.393589] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.393763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.393850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.393958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.394066] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.394168] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.394277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.394358] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.394540] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.394626] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.394740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.394901] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.395016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.395098] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.395262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.395447] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.395616] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.395788] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.395956] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.396072] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.398206] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.398317] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.398405] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.398577] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.398675] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.398859] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.399012] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.399151] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.399292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.399386] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.399525] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.399673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.399761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.399841] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.399984] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.400064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.400150] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.400286] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.400427] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.400574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.400761] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.400922] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.401015] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.401193] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.401359] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.401451] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.401554] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.401662] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.401751] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.401856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.402022] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.402183] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.402373] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.402479] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.402565] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.402768] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.402924] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.403096] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.403266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.403372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.403454] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.403630] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.403740] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.403854] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.404016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.404126] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.404240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.404346] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.404510] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.404706] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.404871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.404964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.405064] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.405221] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.405409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.405494] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.405665] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.405843] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.405996] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.406193] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.406363] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.406469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.406574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.406737] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.406844] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.406952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.407136] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.407307] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.407474] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.407641] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.407809] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.407923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.408032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.408114] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.408312] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.408397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.408502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.408586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.408684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.408795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.408878] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.409039] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.409237] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.409392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.409508] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.409616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.409730] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.409811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.409913] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.410076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.410163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.410268] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.410376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.410459] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.410572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.410682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.410876] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.411044] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.411205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.411396] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.411572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.411684] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.411833] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.411934] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.412089] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.412191] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.412294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.412405] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.412591] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.412699] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.412804] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.412983] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.413156] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.413342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.413447] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.413609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.413726] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.413809] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.413976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.414078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.414195] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.416263] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.416424] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.416597] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.416765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.416878] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.416984] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.417073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.417160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.417239] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.417389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.417476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.417565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.417652] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.417733] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.417878] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.418020] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.418106] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.418248] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.418334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.418419] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.418560] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.418651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.418816] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.418982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.419084] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.419254] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.419360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.419548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.419661] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.419823] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.419999] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.420184] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.420367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.420447] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.420607] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.420792] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.420876] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.420971] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.421162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.421244] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.421344] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.421507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.421614] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.421706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.421812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.421973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.422087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.422192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.422300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.422409] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.422491] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.422597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.422683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.422790] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.422888] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.423036] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.423219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.423301] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.423473] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.423583] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.423771] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.423870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.424054] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.424223] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.424333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.424439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.424628] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.424792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.424964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.425072] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.425177] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.425288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.425401] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.425580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.425773] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.425939] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.426021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.426127] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.426229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.426345] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.426506] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.426609] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.426778] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.426888] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.427045] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.427203] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.427370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.427540] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.427703] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.427991] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.428097] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.428284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.428370] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.428481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.428565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.428677] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.428852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.428969] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.429078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.429184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.429287] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.429390] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.429500] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.429664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.429768] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.429850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.429961] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.430123] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.430296] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.430468] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.430632] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.430716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.430827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.430930] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.431042] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.431216] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.431325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.431434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.431605] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.431784] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.431967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.432147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.432251] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.432416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.432523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.432633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.434666] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.434828] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.435016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.435097] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.435211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.435325] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.435488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.435573] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.435720] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.435862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.435947] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.436083] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.436162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.436243] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.436333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.436417] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.436556] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.436701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.436789] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.436927] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.437012] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.437114] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.437281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.437441] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.437543] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.437717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.437883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.438069] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.438236] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.438320] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.438509] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.438679] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.438787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.438889] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.439004] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.439112] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.439193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.439299] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.439403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.439511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.439682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.439852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.439962] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.440076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.440156] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.440356] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.440525] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.440698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.440785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.440891] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.440984] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.441160] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.441245] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.441349] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.441455] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.441619] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.441813] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.441927] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.442104] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.442214] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.442324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.442487] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.442660] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.442822] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.442935] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.443092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.443200] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.443354] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.443526] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.443723] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.443887] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.443995] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.444158] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.444336] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.444496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.444578] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.444756] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.444926] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.445107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.445272] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.445430] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.445603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.445705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.445790] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.445988] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.446153] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.446237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.446348] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.446430] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.446591] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.446792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.446956] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.447118] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.447220] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.447397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.447501] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.447670] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.447840] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.447994] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.448081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.448193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.448280] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.448469] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.448638] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.448796] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.448997] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.449179] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.449342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.449434] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.449546] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.449633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.449744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.449911] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.450017] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.450119] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.450239] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.450413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.450499] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.450613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.452619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.452727] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.452913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.453014] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.453185] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.453359] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.453519] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.453606] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.453752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.453841] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.453929] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.454072] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.454161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.454254] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.454395] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.454529] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.454678] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.454819] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.454904] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.455042] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.455241] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.455405] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.455512] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.455675] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.455839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.455917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.456028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.456133] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.456214] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.456395] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.456552] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.456731] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.456911] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.457070] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.457238] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.457340] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.457509] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.457680] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.457852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.457954] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.458044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.458148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.458257] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.458415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.458580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.458782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.458947] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.459120] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.459289] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.459401] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.459569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.459684] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.459850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.459936] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.460127] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.460292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.460372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.460475] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.460557] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.460666] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.460776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.460885] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.461082] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.461169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.461281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.461453] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.461622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.461733] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.461812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.461976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.462168] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.462253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.462363] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.462474] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.462560] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.462661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.462769] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.462930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.463091] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.463280] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.463462] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.463561] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.463679] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.463843] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.463954] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.464053] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.464210] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.464300] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.464576] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.464760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.464857] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.464948] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.465127] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.465228] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.465406] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.465601] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.465713] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.465881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.465963] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.466072] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.466178] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.466356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.466464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.466573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.466667] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.466776] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.466888] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.467001] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.467087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.467194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.467358] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.467526] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.467633] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.467825] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.467994] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.468106] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.468194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.468356] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.468542] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.468720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.468826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.470971] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.471141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.471305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.471415] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.471525] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.471692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.471830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.471909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.471987] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.472129] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.472278] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.472368] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.472449] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.472586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.472678] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.472765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.472855] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.472993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.473079] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.473217] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.473354] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.473520] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.473634] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.473809] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.473923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.474033] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.474208] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.474302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.474415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.474599] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.474765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.474856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.475034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.475140] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.475308] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.475490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.475590] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.475766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.475878] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.475969] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.476080] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.476255] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.476420] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.476533] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.476638] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.476807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.476964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.477075] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.477269] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.477438] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.477611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.477723] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.477807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.477995] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.478158] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.478324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.478487] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.478607] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.478791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.478899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.478984] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.479143] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.479252] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.479362] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.479472] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.479637] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.479720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.479830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.479937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.480049] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.480215] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.480300] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.480405] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.480595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.480677] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.480784] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.480869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.480973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.481082] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.481245] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.481355] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.481523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.481635] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.481743] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.481825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.481934] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.482040] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.482230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.482314] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.482431] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.482613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.482719] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.482821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.482910] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.483097] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.483200] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.483277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.483384] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.483565] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.483747] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.483859] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.484016] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.484209] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.484295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.484404] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.484511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.484713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.484824] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.484988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.485104] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.485300] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.485471] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.485645] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.485839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.485928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.486117] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.486322] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.486398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.486503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.486672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.486784] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.486888] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.487052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.487167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.487268] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.489354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.489458] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.489651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.489811] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.489980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.490142] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.490224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.490306] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.490393] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.490534] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.490691] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.490837] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.490976] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.491112] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.491262] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.491345] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.491491] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.491575] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.491712] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.491822] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.491930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.492092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.492257] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.492427] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.492589] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.492702] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.492866] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.493033] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.493193] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.493354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.493454] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.493561] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.493733] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.493815] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.493992] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.494163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.494330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.494424] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.494609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.494720] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.494881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.494986] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.495144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.495315] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.495476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.495582] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.495752] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.495916] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.496081] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.496191] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.496357] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.496465] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.496578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.496665] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.496823] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.496994] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.497178] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.497256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.497445] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.497611] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.497771] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.497935] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.498107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.498210] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.498316] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.498401] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.498513] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.498682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.498844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.499008] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.499117] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.499314] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.499481] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.499646] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.499756] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.499844] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.499953] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.500058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.500152] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.500325] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.500591] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.500758] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.500850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.500959] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.501122] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.501296] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.501457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.501564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.501726] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.501813] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.502002] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.502086] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.502192] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.502354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.502463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.502635] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.502746] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.502932] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.503091] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.503260] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.503427] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.503539] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.503642] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.503819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.503984] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.504151] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.504330] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.504503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.504615] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.504778] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.504894] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.506955] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.507071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.507232] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.507334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.507414] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.507608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.507686] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.507827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.507917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.508004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.508148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.508235] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.508371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.508464] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.508605] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.508752] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.508893] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.509026] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.509174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.509257] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.509424] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.509578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.509696] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.509879] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.510045] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.510164] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.510319] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.510427] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.510590] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.510762] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.510921] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.511023] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.511196] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.511361] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.511522] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.511634] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.511801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.511909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.512015] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.512092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.512265] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.512451] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.512616] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.512777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.512946] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.513107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.513220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.513331] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.513414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.513526] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.513698] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.513862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.513969] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.514055] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.514214] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.514321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.514484] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.514597] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.514795] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.514957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.515063] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.515231] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.515315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.515426] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.515532] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.515622] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.515782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.515969] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.516137] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.516319] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.516492] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.516583] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.516681] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.516783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.516890] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.517005] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.517116] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.517194] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.517303] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.517466] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.517575] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.517742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.517891] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.518001] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.518179] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.518354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.518467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.518570] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.518667] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.518832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.518948] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.519117] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.519283] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.519480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.519641] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.519827] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.520015] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.520188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.520292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.520400] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.520481] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.520652] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.520846] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.520999] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.521166] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.521282] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.521454] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.521551] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.521731] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.521892] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.522045] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.522211] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.522371] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.522531] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.522698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.524732] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.524904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.525003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.525109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.525273] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.525445] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.525584] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.525665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.525754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.525839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.525923] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.526063] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.526147] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.526284] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.526425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.526508] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.526593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.526675] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.526822] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.526964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.527046] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.527209] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.527380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.527573] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.527734] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.527899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.527979] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.528090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.528199] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.528380] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.528489] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.528581] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.528690] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.528802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.528904] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.528988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.529095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.529210] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.529397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.529480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.529647] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.529827] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.529980] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.530088] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.530200] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.530280] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.530383] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.530558] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.530665] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.530827] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.531024] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.531193] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.531385] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.531544] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.531648] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.531757] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.531866] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.532058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.532143] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.532325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.532411] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.532586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.532699] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.532801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.532906] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.533016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.533123] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.533229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.533313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.533426] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.533593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.533698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.533788] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.533899] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.534068] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.534228] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.534403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.534593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.534692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.534855] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.534962] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.535048] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.535229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.535318] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.535514] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.535695] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.535801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.535913] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.536082] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.536265] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.536423] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.536619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.536736] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.536901] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.537004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.537175] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.537343] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.537513] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.537627] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.537714] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.537896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.538068] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.538252] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.538345] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.538512] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.538707] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.538820] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.538900] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.539067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.539170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.539338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.539450] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.539620] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.539729] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.539831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.539913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.540014] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.540111] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.540211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.540317] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.540425] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.540601] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.540711] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.540797] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.540959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.541063] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.543211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.543315] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.543474] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.543669] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.543836] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.544007] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.544154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.544240] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.544375] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.544462] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.544609] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.544750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.544832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.544913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.544993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.545137] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.545289] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.545370] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.545514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.545597] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.545786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.545946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.546025] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.546183] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.546355] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.546465] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.546634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.546735] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.546821] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.547009] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.547095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.547210] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.547367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.547469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.547583] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.547746] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.547854] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.547948] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.548121] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.548210] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.548389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.548471] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.548577] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.548692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.548858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.548963] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.549049] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.549162] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.549269] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.549346] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.549534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.549646] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.549805] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.549915] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.550022] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.550186] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.550360] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.550536] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.550736] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.550893] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.551004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.551162] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.551321] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.551502] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.551662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.551841] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.551944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.552052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.552168] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.552261] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.552365] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.552534] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.552725] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.552892] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.553062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.553227] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.553343] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.553430] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.553595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.553707] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.553868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.553973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.554147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.554240] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.554340] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.554456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.554547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.554656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.554755] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.554943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.555054] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.555217] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.555388] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.555496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.555581] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.555694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.555785] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.555886] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.556075] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.556243] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.556408] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.556580] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.556690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.556842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.557040] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.557221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.557328] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.557498] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.557652] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.557764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.557922] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.558026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.558121] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.558236] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.558344] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.558455] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.558636] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.558795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.558906] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.559073] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.561194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.561350] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.561519] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.561631] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.561802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.561898] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.562037] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.562119] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.562204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.562286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.562360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.562443] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.562578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.562663] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.562744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.562834] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.562917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.563004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.563146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.563287] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.563373] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.563459] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.563549] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.563662] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.563767] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.563855] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.564039] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.564125] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.564304] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.564389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.564490] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.564693] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.564851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.564972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.565078] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.565181] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.565286] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.565399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.565504] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.565611] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.565720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.565804] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.565967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.566157] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.566266] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.566428] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.566619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.566727] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.566804] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.566912] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.567017] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.567179] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.567291] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.567403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.567503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.567600] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.567696] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.567879] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.568054] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.568242] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.568410] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.568591] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.568705] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.568864] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.569025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.569130] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.569211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.569324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.569502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.569609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.569716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.569826] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.569925] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.570098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.570206] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.570325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.570427] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.570546] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.570637] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.570750] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.570918] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.571006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.571109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.571285] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.571388] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.571589] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.571752] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.571910] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.572073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.572180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.572293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.572393] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.572575] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.572757] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.572862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.572946] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.573140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.573242] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.573436] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.573550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.573660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.573741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.573847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.573953] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.574062] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.574147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.574263] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.574377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.574484] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.574653] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.574758] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.574924] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.575079] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.575263] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.575346] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.575516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.575701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.575802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.575887] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.576074] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.576238] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.576345] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.576453] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.576624] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.576724] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.576830] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.577028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.577132] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.577326] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.577491] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.577657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.577759] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.577848] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.580015] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.580186] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.580354] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.580523] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.580630] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.580794] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.580875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.580959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.581042] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.581180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.581316] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.581402] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.581544] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.581673] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.581813] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.581898] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.581976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.582065] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.582144] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.582234] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.582322] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.582491] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.582574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.582683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.582790] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.582960] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.583074] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.583167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.583281] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.583386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.583492] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.583662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.583827] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.583933] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.584105] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.584268] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.584438] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.584548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.584655] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.584848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.584958] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.585157] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.585315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.585421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.585590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.585694] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.585858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.585963] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.586066] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.586256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.586418] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.586526] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.586610] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.586716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.586823] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.586988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.587147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.587245] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.587419] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.587583] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.587694] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.587804] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.587963] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.588059] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.588227] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.588327] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.588441] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.588611] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.588786] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.588952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.589060] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.589225] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.589414] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.589518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.589629] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.589717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.589886] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.590069] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.590156] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.590327] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.590516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.590689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.590877] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.590960] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.591140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.591245] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.591323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.591493] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.591662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.591856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.592027] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.592192] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.592367] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.592547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.592636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.592735] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.592898] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.593004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.593173] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.593333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.593432] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.593596] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.593756] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.593922] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.594111] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.594192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.594305] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.594463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.594565] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.594657] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.594816] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.594983] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.595144] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.595251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.595369] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.595524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.595690] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.595787] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.597921] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.598031] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.598187] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.598359] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.598467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.598646] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.598732] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.598877] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.598963] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.599089] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.599173] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.599315] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.599460] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.599550] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.599687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.599768] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.599854] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.599936] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.600080] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.600221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.600303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.600411] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.600516] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.600699] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.600807] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.600921] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.601003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.601108] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.601218] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.601389] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.601554] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.601745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.601832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.601941] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.602025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.602133] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.602302] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.602490] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.602677] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.602762] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.602869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.602955] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.603057] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.603246] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.603407] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.603603] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.603760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.603863] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.603967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.604131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.604238] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.604337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.604423] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.604599] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.604770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.604874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.604981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.605154] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.605315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.605424] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.605602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.605793] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.605961] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.606073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.606159] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.606275] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.606428] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.606599] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.606888] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.606972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.607082] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.607200] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.607380] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.607466] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.607582] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.607693] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.607799] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.607911] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.608069] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.608233] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.608384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.608478] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.608654] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.608811] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.608990] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.609098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.609200] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.609363] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.609526] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.609702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.609808] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.610000] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.610167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.610277] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.610475] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.610638] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.610795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.610909] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.611016] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.611104] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.611298] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.611460] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.611636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.611717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.611826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.612021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.612104] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.612273] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.612377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.612461] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.612651] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.612737] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.612849] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.613013] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.613179] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.613345] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.613507] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.613699] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.613885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.613959] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.616050] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.616198] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.616296] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.616460] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.616547] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.616742] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.616885] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.616972] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.617054] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.617141] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.617281] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.617423] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.617569] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.617651] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.617730] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.617871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.617957] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.618111] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.618197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.618285] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.618426] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.618545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.618654] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.618825] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.618995] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.619160] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.619324] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.619436] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.619547] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.619735] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.619820] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.619992] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.620102] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.620265] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.620375] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.620487] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.620596] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.620700] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.620858] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.621033] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.621197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.621303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.621412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.621514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.621684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.621794] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.621879] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.621987] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.622150] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.622256] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.622371] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.622540] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.622644] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.622810] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.622918] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.623000] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.623189] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.623377] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.623482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.623567] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.623684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.623767] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.623875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.623985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.624094] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.624204] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.624369] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.624479] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.624587] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.624755] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.624865] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.625036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.625143] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.625306] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.625501] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.625585] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.625767] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.625928] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.626102] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.626207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.626403] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.626571] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.626669] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.626778] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.626883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.627078] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.627253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.627361] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.627534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.627653] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.627815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.627922] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.628025] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.628204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.628287] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.628391] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.628576] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.628738] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.628822] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.628934] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.629043] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.629205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.629380] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.629559] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.629730] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.629829] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.629996] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.630169] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.630330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.630439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.630616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.630716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.630822] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.630988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.631176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.631262] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.631361] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.631444] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.631646] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.631829] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.631911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.632069] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.634170] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.634278] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.634438] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.634603] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.634715] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.634875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.634960] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.635039] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.635118] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.635196] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.635338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.635422] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.635511] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.635598] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.635740] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.635825] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.635979] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.636122] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.636207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.636290] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.636373] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.636449] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.636621] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.636785] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.636953] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.637148] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.637310] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.637488] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.637599] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.637767] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.637850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.637956] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.638062] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.638247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.638409] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.638582] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.638744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.638936] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.639046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.639156] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.639270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.639357] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.639465] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.639556] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.639660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.639771] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.639934] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.640023] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.640190] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.640381] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.640544] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.640696] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.640806] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.640973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.641143] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.641249] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.641416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.641528] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.641612] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.641721] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.641916] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.642025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.642133] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.642248] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.642364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.642534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.642650] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.642764] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.642874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.642946] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.643043] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.643310] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.643394] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.643504] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.643680] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.643784] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.643896] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.643983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.644092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.644198] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.644283] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.644395] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.644591] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.644701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.644788] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.644975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.645086] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.645197] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.645306] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.645392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.645505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.645609] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.645715] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.645907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.646018] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.646180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.646293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.646403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.646489] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.646600] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.646792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.646988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.647101] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.647264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.647375] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.647485] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.647663] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.647774] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.647883] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.647993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.648092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.648198] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.648307] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.648467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.648579] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.648746] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.648933] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.649020] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.649135] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.649320] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.649511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.649679] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.649835] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.649944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.650025] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.650132] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.650243] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.650403] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.650509] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.650628] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.650811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.650921] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.653027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.653109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.653215] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.653379] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.653553] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.653730] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.653866] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.654009] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.654154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.654239] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.654379] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.654523] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.654656] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.654800] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.654885] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.655026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.655118] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.655201] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.655342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.655431] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.655550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.655659] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.655763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.655869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.655953] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.656132] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.656240] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.656404] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.656513] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.656678] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.656792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.656961] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.657125] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.657209] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.657371] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.657482] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.657655] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.657763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.657870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.658036] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.658223] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.658391] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.658585] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.658697] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.658858] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.658968] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.659074] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.659154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.659260] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.659434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.659622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.659713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.659821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.659925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.660033] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.660186] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.660298] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.660383] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.660574] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.660743] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.660847] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.660928] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.661032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.661121] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.661287] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.661394] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.661503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.661616] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.661720] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.661825] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.661942] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.662100] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.662208] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.662294] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.662490] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.662597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.662706] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.662815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.662899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.663004] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.663115] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.663279] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.663383] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.663482] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.663672] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.663859] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.663972] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.664130] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.664230] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.664330] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.664442] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.664564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.664671] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.664782] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.664944] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.665105] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.665258] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.665369] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.665477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.665590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.665705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.665810] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.665917] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.666022] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.666128] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.666234] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.666399] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.666504] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.666587] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.666695] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.666803] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.666891] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.667091] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.667281] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.667390] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.667503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.667665] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.667831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.668002] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.668108] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.668271] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.668463] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.668661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.668766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.668874] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.668976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.669085] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.669164] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.669359] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.669464] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.671547] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.671658] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.671832] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.672006] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.672166] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.672334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.672421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.672518] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.672597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.672683] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.672819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.672964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.673049] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.673137] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.673220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.673301] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.673388] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.673476] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.673624] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.673762] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.673911] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.674022] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.674132] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.674296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.674383] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.674503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.674591] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.674700] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.674850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.674959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.675067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.675176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.675288] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.675394] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.675481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.675589] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.675772] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.675881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.675988] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.676158] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.676323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.676489] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.676650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.676840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.676948] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.677118] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.677302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.677511] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.677674] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.677839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.677951] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.678061] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.678167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.678273] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.678385] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.678500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.678605] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.678717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.678880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.678989] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.679097] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.679261] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.679427] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.679514] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.679620] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.679787] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.679941] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.680105] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.680281] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.680445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.680555] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.680669] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.680844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.681023] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.681132] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.681320] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.681502] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.681671] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.681846] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.682012] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.682183] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.682292] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.682403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.682570] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.682729] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.682841] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.682945] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.683114] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.683279] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.683392] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.683504] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.683589] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.683697] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.683780] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.683891] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.684064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.684168] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.684336] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.684448] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.684613] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.684697] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.684807] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.684893] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.684998] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.685183] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.685269] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.685428] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.685537] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.685640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.685752] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.685861] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.686026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.686132] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.686291] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.686391] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.686503] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.686619] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.686724] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.686884] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.687051] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.687161] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.687324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.687519] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.687633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.687735] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.687843] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.689995] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.690146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.690239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.690346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.690453] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.690571] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.690734] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.690866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.690944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.691028] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.691108] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.691192] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.691276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.691364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.691443] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.691531] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.691615] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.691701] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.691835] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.691966] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.692107] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.692247] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.692398] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.692493] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.692615] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.692727] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.692913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.693017] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.693182] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.693346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.693451] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.693627] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.693817] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.693934] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.694116] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.694223] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.694384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.694496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.694611] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.694771] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.694858] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.695024] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.695135] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.695296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.695401] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.695590] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.695672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.695777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.695881] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.696043] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.696125] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.696315] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.696401] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.696563] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.696664] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.696852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.696953] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.697046] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.697237] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.697407] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.697497] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.697610] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.697769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.697876] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.698035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.698136] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.698303] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.698494] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.698685] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.698770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.698881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.698994] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.699156] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.699314] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.699506] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.699586] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.699769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.699874] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.700035] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.700204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.700312] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.700487] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.700645] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.700753] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.700862] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.700973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.701137] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.701224] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.701337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.701425] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.701534] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.701645] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.701842] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.702008] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.702171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.702277] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.702455] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.702563] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.702727] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.702825] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.702993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.703164] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.703276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.703365] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.703481] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.703664] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.703779] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.703936] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.704110] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.704294] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.704479] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.704654] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.704735] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.704844] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.704934] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.705107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.705194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.705373] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.705467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.705649] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.705810] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.705974] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.708067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.708176] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.708342] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.708503] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.708681] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.708839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.708924] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.709009] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.709157] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.709240] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.709382] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.709464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.709551] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.709686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.709770] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.709907] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.710051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.710193] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.710333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.710418] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.710617] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.710781] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.710957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.711044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.711151] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.711237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.711346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.711453] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.711615] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.711805] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.711964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.712067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.712176] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.712257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.712367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.712480] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.712745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.712851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.712932] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.713044] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.713211] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.713322] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.713481] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.713560] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.713665] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.713824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.713930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.714131] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.714239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.714343] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.714505] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.714673] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.714841] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.714958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.715071] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.715177] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.715374] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.715545] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.715710] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.715902] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.715982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.716089] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.716260] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.716445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.716558] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.716717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.716815] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.716979] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.717169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.717255] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.717358] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.717442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.717613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.717803] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.717912] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.718018] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.718171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.718251] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.718415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.718580] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.718775] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.718883] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.719048] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.719135] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.719257] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.719418] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.719535] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.719682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.719854] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.719965] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.720163] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.720264] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.720431] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.720604] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.720787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.720869] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.720982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.721149] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.721301] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.721408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.721496] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.721602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.721770] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.721881] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.721982] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.722150] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.722338] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.722428] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.722544] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.722719] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.722824] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.722931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.723039] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.723126] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.723293] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.723403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.723578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.723685] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.723842] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.724008] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.724119] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.724231] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.726318] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.726421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.726540] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.726702] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.726790] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.726988] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.727098] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.727245] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.727329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.727412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.727502] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.727643] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.727783] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.727866] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.728006] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.728153] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.728239] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.728325] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.728476] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.728555] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.728643] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.728729] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.728836] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.729031] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.729114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.729223] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.729390] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.729582] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.729663] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.729770] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.729959] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.730123] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.730227] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.730393] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.730501] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.730665] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.730834] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.730939] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.731103] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.731285] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.731467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.731564] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.731728] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.731923] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.732080] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.732246] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.732356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.732467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.732627] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.732797] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.732956] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.733123] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.733231] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.733340] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.733501] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.733665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.733773] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.733932] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.734092] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.734174] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.734299] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.734404] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.734517] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.734605] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.734707] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.734786] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.734892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.735005] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.735164] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.735336] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.735440] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.735604] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.735713] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.735873] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.735988] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.736159] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.736321] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.736434] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.736601] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.736766] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.736950] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.737108] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.737219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.737324] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.737524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.737634] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.737744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.737911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.738071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.738259] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.738342] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.738524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.738691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.738803] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.738880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.738987] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.739075] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.739264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.739347] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.739456] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.739574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.739660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.739761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.739848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.739961] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.740146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.740231] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.740425] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.740596] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.740762] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.740921] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.741032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.741139] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.741312] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.741401] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.741506] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.741689] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.741795] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.741903] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.741985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.742087] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.742195] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.742307] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.742418] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.744562] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.744745] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.744852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.744961] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.745067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.745172] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.745288] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.745421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.745564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.745650] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.745736] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.745880] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.745964] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.746046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.746130] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.746215] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.746354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.746442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.746586] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.746665] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.746758] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.746902] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.746982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.747090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.747198] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.747363] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.747471] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.747656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.747860] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.748021] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.748105] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.748212] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.748323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.748498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.748609] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.748800] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.749000] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.749166] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.749328] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.749439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.749604] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.749716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.749823] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.749931] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.750094] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.750259] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.750366] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.750538] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.750644] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.750810] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.750993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.751188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.751275] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.751465] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.751552] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.751705] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.751817] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.751900] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.752064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.752178] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.752339] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.752538] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.752720] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.752892] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.752973] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.753077] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.753184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.753264] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.753463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.753550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.753659] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.753831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.754001] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.754107] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.754216] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.754387] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.754562] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.754667] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.754828] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.754935] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.755030] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.755139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.755226] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.755335] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.755509] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.755592] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.755783] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.755968] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.756071] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.756237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.756341] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.756506] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.756671] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.756830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.756929] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.757101] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.757272] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.757463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.757548] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.757657] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.757767] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.757867] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.757972] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.758169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.758253] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.758354] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.758527] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.758692] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.758876] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.759037] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.759144] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.759301] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.759385] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.759504] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.759668] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.759837] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.760002] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.760114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.760207] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.760313] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.760432] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.760601] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.760709] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.760812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.762920] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.763082] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.763181] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.763356] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.763542] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.763705] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.763851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.763937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.764004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.764146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.764231] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.764367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.764459] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.764539] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.764689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.764831] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.764966] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.765050] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.765188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.765272] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.765447] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.765552] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.765655] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.765740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.765911] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.766073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.766179] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.766291] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.766458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.766568] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.766673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.766765] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.766852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.766965] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.767070] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.767233] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.767400] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.767572] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.767682] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.767786] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.767870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.767982] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.768094] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.768207] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.768381] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.768487] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.768595] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.768762] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.768873] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.768976] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.769085] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.769165] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.769274] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.769461] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.769625] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.769733] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.769843] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.770004] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.770173] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.770279] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.770449] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.770559] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.770750] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.770943] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.771050] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.771137] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.771323] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.771484] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.771651] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.771760] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.771876] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.772064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.772161] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.772249] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.772356] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.772464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.772566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.772674] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.772846] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.773011] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.773183] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.773367] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.773458] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.773575] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.773657] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.773844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.774012] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.774115] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.774278] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.774452] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.774636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.774721] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.774903] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.775010] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.775117] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.775220] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.775331] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.775435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.775524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.775690] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.775796] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.775959] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.776044] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.776156] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.776264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.776358] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.776463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.776543] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.776651] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.776819] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.776981] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.777146] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.777311] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.777513] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.777677] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.777783] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.777955] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.778073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.778191] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.778360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.778477] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.778581] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.778663] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.778851] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.778967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.779138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.779251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.781276] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.781389] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.781502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.781585] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.781698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.781894] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.781983] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.782098] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.782188] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.782270] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.782354] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.782505] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.782644] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.782729] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.782872] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.782952] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.783090] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.783181] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.783268] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.783415] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.783551] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.783691] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.783773] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.783894] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.784006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.784110] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.784220] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.784412] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.784517] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.784618] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.784803] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.784975] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.785138] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.785303] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.785477] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.785662] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.785826] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.785994] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.786090] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.786258] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.786421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.786530] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.786643] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.786811] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.787002] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.787172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.787364] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.787467] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.787642] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.787727] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.787840] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.787940] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.788035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.788135] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.788302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.788384] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.788550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.788653] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.788820] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.788930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.789095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.789202] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.789305] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.789408] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.789499] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.789608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.789689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.789852] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.790017] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.790194] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.790364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.790559] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.790672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.790777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.790930] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.791105] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.791208] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.791368] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.791480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.791585] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.791685] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.791769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.791887] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.791996] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.792192] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.792352] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.792544] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.792716] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.792799] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.792903] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.793010] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.793091] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.793255] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.793441] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.793595] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.793766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.793871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.793980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.794146] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.794253] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.794421] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.794613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.794801] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.794888] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.794996] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.795076] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.795180] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.795342] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.795440] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.795613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.795811] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.795915] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.796084] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.796169] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.796333] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.796445] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.796530] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.796719] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.796876] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.797068] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.797230] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.797395] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.797488] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.799635] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.799801] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.799971] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.800144] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.800326] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.800467] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.800553] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.800640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.800726] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.800871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.800957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.801036] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.801122] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.801205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.801350] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.801441] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.801583] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.801720] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.801854] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.801997] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.802113] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.802199] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.802358] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.802528] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.802690] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.802849] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.802961] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.803135] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.803296] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.803402] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.803511] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.803622] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.803778] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.803938] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.804126] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.804217] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.804372] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.804483] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.804595] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.804674] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.804787] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.804896] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.805058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.805169] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.805341] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.805515] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.805602] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.805805] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.805967] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.806141] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.806334] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.806498] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.806666] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.806769] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.806846] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.807032] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.807114] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.807219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.807325] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.807432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.807543] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.807646] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.807806] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.808000] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.808150] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.808318] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.808423] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.808587] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.808668] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.808830] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.808993] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.809175] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.809280] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.809452] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.809563] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.809668] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.809830] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.810029] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.810130] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.810241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.810355] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.810464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.810550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.810661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.810777] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.810866] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.810973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.811140] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.811310] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.811420] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.811525] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.811682] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.811848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.811927] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.812110] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.812202] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.812384] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.812553] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.812660] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.812832] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.813010] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.813183] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.813375] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.813487] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.813593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.813697] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.813868] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.813977] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.814154] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.814259] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.814431] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.814544] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.814636] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.814739] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.814912] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.815089] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.815168] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.815277] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.815443] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.817579] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.817832] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.817948] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.818058] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.818170] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.818334] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.818480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.818566] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.818708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.818848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.818937] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.819019] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.819105] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.819190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.819278] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.819364] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.819522] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.819660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.819741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.819827] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.819973] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.820139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.820224] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.820416] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.820585] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.820733] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.820848] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.820944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.821053] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.821140] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.821254] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.821420] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.821604] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.821713] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.821820] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.821969] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.822138] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.822309] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.822502] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.822608] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.822692] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.822844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.823037] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.823205] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.823362] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.823527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.823632] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.823741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.823851] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.824040] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.824128] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.824232] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.824317] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.824513] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.824622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.824708] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.824826] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.824980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.825138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.825248] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.825428] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.825591] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.825762] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.825923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.826027] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.826137] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.826219] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.826328] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.826435] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.826545] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.826650] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.826726] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.826838] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.826954] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.827064] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.827167] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.827257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.827370] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.827487] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.827597] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.827695] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.827852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.827958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.828060] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.828237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.828325] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.828486] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.828593] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.828701] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.828813] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.828931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.829038] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.829139] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.829251] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.829365] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.829474] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.829578] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.829683] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.829785] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.829958] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.830063] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.830169] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.830272] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.830457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.830566] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.830655] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.830844] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.831006] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.831108] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.831272] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.831383] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.831574] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.831688] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.831856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.832046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.832156] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.832340] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.832517] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.832708] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.832867] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.832979] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.833089] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.833193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.833272] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.833381] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.833485] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.833596] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.833687] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.833777] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.833961] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.834128] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.836274] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.836393] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.836582] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.836750] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.836837] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.836949] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.837029] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.837172] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.837322] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.837457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.837540] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.837679] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.837763] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.837839] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.837919] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.838060] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.838203] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.838346] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.838432] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.838517] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.838650] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.838846] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.838925] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.839034] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.839145] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.839311] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.839421] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.839528] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.839684] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.839764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.839931] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.840046] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.840152] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.840262] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.840452] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.840628] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.840734] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.840830] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.840932] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.841026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.841132] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.841241] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.841352] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.841464] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.841548] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.841741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.841850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.841962] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.842049] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.842240] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.842396] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.842514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.842683] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.842855] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.843052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.843163] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.843328] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.843505] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.843610] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.843792] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.843957] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.844063] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.844168] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.844361] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.844529] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.844716] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.844868] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.845031] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.845142] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.845316] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.845477] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.845637] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.845744] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.845914] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.846079] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.846190] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.846304] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.846466] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.846564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.846660] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.846763] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.846959] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.847115] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.847204] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.847309] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.847393] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.847564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.847672] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.847782] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.847899] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.848067] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.848151] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.848307] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.848432] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.848591] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.848761] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.848869] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.849056] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.849228] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.849395] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.849582] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.849665] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.849829] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.850026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.850136] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.850304] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.850492] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.850656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.850764] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.850924] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.851035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.851145] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.851302] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.851413] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.851500] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.851605] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.851766] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.851875] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.852035] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.852199] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.852371] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.854576] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.854689] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.854802] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.854907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.854993] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.855101] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.855271] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.855359] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.855446] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.855532] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.855673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.855758] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.855902] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.855986] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.856123] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.856260] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.856400] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.856482] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.856565] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.856712] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.856791] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.856879] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.856965] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.857070] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.857264] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.857368] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.857480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.857587] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.857756] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.857860] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.858051] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.858219] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.858397] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.858507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.858618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.858703] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.858875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.858990] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.859147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.859261] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.859366] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.859527] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.859640] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.859744] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.859856] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.860023] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.860201] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.860310] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.860426] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.860587] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.860698] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.860781] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.860895] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.860985] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.861095] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.861199] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.861306] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.861419] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.861573] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.861686] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.861794] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.861952] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.862068] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.862221] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.862332] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.862507] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.862622] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.862717] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.862870] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.863027] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.863206] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.863289] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.863474] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.863656] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.863767] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.863935] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.864138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.864237] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.864319] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.864423] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.864617] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.864696] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.864798] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.864901] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.865073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.865184] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.865277] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.865384] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.865575] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.865674] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.865849] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.866026] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.866191] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.866303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.866387] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.866498] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.866607] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.866693] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.866874] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.867052] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.867165] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.867331] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.867518] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.867677] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.867837] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.868026] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.868136] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.868302] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.868497] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.868661] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.868825] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.868986] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.869148] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.869257] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.869363] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.869556] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.869717] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.869802] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.869991] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.870150] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.870232] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.870341] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.870457] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.870545] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.870694] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.872756] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.872866] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.873033] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.873145] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.873328] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.873429] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.873537] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.873679] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.873815] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.873899] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.873980] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.874126] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.874210] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.874298] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.874386] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.874469] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.874550] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.874631] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.874716] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.874866] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.875015] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.875104] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.875185] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.875295] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.875463] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.875570] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.875742] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.875850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.875962] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.876073] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.876181] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.876353] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.876543] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.876632] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.876811] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.876991] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.877098] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.877295] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.877403] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.877566] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.877727] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.877836] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.877943] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.878119] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.878284] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.878384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.878481] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.878655] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.878831] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.878947] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.879111] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.879217] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.879384] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.879495] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.879661] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.879741] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.879850] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.879957] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.880113] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.880221] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.880391] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.880567] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.880754] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.880912] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.881079] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.881193] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.881294] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.881466] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.881638] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.881745] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.881913] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.882014] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.882171] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.882278] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.882374] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.882480] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.882653] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.882815] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.883023] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.883180] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.883269] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.883433] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.883598] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.883754] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.883857] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.884054] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.884138] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.884242] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.884344] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.884524] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.884689] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.884864] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.884971] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.885159] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.885326] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.885431] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.885514] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.885673] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.885776] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.885935] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.886035] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.886117] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.886229] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.886337] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.886416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.886524] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.886633] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.886715] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.886821] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.886928] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.887039] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.887197] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.887360] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.887470] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.887579] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.887740] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.887907] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.888017] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.888128] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.888245] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.888330] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.888613] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.888788] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.888944] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.889056] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.891199] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.891371] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.891541] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.891703] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.891812] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.891969] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.892055] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.892205] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.892294] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.892376] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.892461] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.892546] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.892684] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.892828] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.892966] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.893105] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.893187] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.893274] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.893354] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.893439] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.893575] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.893691] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.893847] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.894001] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.894109] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.894216] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.894303] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.894416] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.894520] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.894684] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.894852] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.894950] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.895057] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.895234] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.895335] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.895501] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.895610] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.895693] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.895807] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.895985] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.896176] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.896334] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.896447] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.896612] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.896699] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.896798] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.897003] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.897109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.897279] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.897449] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.897605] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.897796] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.897956] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.898065] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.898226] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.898422] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.898602] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.898768] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.898870] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.898975] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.899054] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.899165] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.899329] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.899437] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44004
>[  447.899626] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.899783] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.899941] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.900109] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.900279] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.900389] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.900564] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.900645] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040
>[  447.900751] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.900861] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.901018] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.901182] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.901266] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.901378] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.901480] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.901591] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.901710] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.901871] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.901978] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.902147] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 4400c
>[  447.902256] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.902431] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.902597] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.902763] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.902923] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44008
>[  447.903032] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 4400c
>[  447.903201] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.903368] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44004
>[  447.903473] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.903588] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to c400c
>[  447.903758] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44008
>[  447.903918] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.904092] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.904281] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.904442] [drm:hsw_unclaimed_reg_clear] *ERROR* Unknown unclaimed register before writing to 44040
>[  447.904618] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.904718] [drm:ivybridge_irq_handler] *ERROR* Unclaimed register before interrupt
>[  447.904875] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to c400c
>[  447.904978] [drm:hsw_unclaimed_reg_check] *ERROR* Unclaimed write to 44040

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Attachments on bug 67813: 83695 | 83705 | 84069 | 84128 | 99372

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