On BYT https://intel-gfx-ci.01.org/CI/CI_DRM_2298/fi-byt-n2820/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a.html

Dmesg: https://intel-gfx-ci.01.org/CI/CI_DRM_2298/fi-byt-n2820/dmesg-during.log

Dmesg	
[  546.312169] Suspending console(s) (use no_console_suspend to debug)
[  546.320199] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[  546.321946] sd 0:0:0:0: [sda] Stopping disk
[  546.691349] Broke affinity for irq 9
[  546.691368] Broke affinity for irq 87
[  546.691375] Broke affinity for irq 88
[  546.691381] Broke affinity for irq 89
[  546.691387] Broke affinity for irq 90
[  546.701376]  cache: parent cpu1 should not be sleeping
[  546.784192] sd 0:0:0:0: [sda] Starting disk
[  547.139930] ata1.00: supports DRM functions and may not be fully accessible
[  547.141646] ata1.00: NCQ Send/Recv Log not supported
[  547.143885] ata1.00: supports DRM functions and may not be fully accessible
[  547.144516] ata1.00: NCQ Send/Recv Log not supported
[  547.279180] ------------[ cut here ]------------
[  547.279381] WARNING: CPU: 0 PID: 9703 at drivers/gpu/drm/i915/intel_display.c:12603 intel_atomic_commit_tail+0xfd3/0xfe0 [i915]
[  547.279403] pipe A vblank wait timed out
[  547.279422] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul snd_hda_intel ghash_clmulni_intel snd_hda_codec lpc_ich snd_hwdep snd_hda_core snd_pcm i2c_designware_platform i2c_designware_core i915 r8169 mii prime_numbers sdhci_acpi i2c_hid sdhci mmc_core
[  547.279906] CPU: 0 PID: 9703 Comm: kms_pipe_crc_ba Tainted: G     U          4.11.0-rc1-CI-CI_DRM_2298+ #1
[  547.279927] Hardware name: \xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff \xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff/DN2820FYK, BIOS FYBYT10H.86A.0055.2016.0919.1948 09/19/2016
[  547.279945] Call Trace:
[  547.279979]  dump_stack+0x67/0x92
[  547.280011]  __warn+0xc6/0xe0
[  547.280047]  warn_slowpath_fmt+0x4a/0x50
[  547.280082]  ? finish_wait+0x5e/0x80
[  547.280260]  intel_atomic_commit_tail+0xfd3/0xfe0 [i915]
[  547.280312]  ? wake_atomic_t_function+0x30/0x30
[  547.280493]  intel_atomic_commit+0x42f/0x540 [i915]
[  547.280534]  ? drm_atomic_set_crtc_for_connector+0xcb/0x100
[  547.280569]  drm_atomic_commit+0x46/0x50
[  547.280598]  drm_atomic_helper_set_config+0x7e/0xc0
[  547.280631]  drm_mode_set_config_internal+0x60/0x110
[  547.280661]  drm_mode_setcrtc+0x3a8/0x480
[  547.280712]  drm_ioctl+0x200/0x450
[  547.280739]  ? drm_mode_getcrtc+0x170/0x170
[  547.280798]  ? __this_cpu_preempt_check+0x13/0x20
[  547.280831]  do_vfs_ioctl+0x90/0x6e0
[  547.280858]  ? entry_SYSCALL_64_fastpath+0x5/0xb1
[  547.280885]  ? __this_cpu_preempt_check+0x13/0x20
[  547.280911]  ? trace_hardirqs_on_caller+0xe7/0x200
[  547.280943]  SyS_ioctl+0x3c/0x70
[  547.280978]  entry_SYSCALL_64_fastpath+0x1c/0xb1
[  547.280999] RIP: 0033:0x7f97dbd5c357
[  547.281019] RSP: 002b:00007fff784520f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  547.281057] RAX: ffffffffffffffda RBX: ffffffff81482e33 RCX: 00007f97dbd5c357
[  547.281076] RDX: 00007fff78452130 RSI: 00000000c06864a2 RDI: 0000000000000003
[  547.281095] RBP: ffffc90000aa3f88 R08: 0000000000000000 R09: 0000000000956b58
[  547.281114] R10: 0000000000956b78 R11: 0000000000000246 R12: 0000000000955780
[  547.281132] R13: 0000000000000003 R14: 00000000c06864a2 R15: 0000000000000003
[  547.281163]  ? __this_cpu_preempt_check+0x13/0x20
[  547.288109] ---[ end trace 5e1267b10c2c67b8 ]---