Bug 107924

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4817/fi-hsw-4770r/igt@drv_module_reload@basic-reload-inject.html

<4>[  259.292999] ------------[ cut here ]------------
<4>[  259.293021] WARN_ON(!intel_irqs_enabled(dev_priv))
<4>[  259.293067] WARNING: CPU: 4 PID: 134 at drivers/gpu/drm/i915/i915_irq.c:313 ilk_update_display_irq+0xf2/0x100 [i915]
<4>[  259.293068] Modules linked in: i915(+) vgem snd_hda_codec_hdmi btusb x86_pkg_temp_thermal btrtl btbcm snd_hda_codec_realtek coretemp btintel snd_hda_codec_generic crct10dif_pclmul bluetooth crc32_pclmul ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core ecdh_generic snd_pcm mei_me r8169 lpc_ich prime_numbers mei [last unloaded: i915]
<4>[  259.293111] CPU: 4 PID: 134 Comm: kworker/4:1 Tainted: G     U            4.19.0-rc3-CI-CI_DRM_4817+ #1
<4>[  259.293112] Hardware name: GIGABYTE M4HM87P-00/M4HM87P-00, BIOS F4 03/10/2014
<4>[  259.293147] Workqueue: events intel_dp_modeset_retry_work_fn [i915]
<4>[  259.293175] RIP: 0010:ilk_update_display_irq+0xf2/0x100 [i915]
<4>[  259.293177] Code: 7c 47 a0 e8 30 96 d7 e0 0f 0b 80 bd dd ac 00 00 00 0f 85 51 ff ff ff 48 c7 c6 60 99 48 a0 48 c7 c7 95 7c 47 a0 e8 0e 96 d7 e0 <0f> 0b 5b 5d 41 5c c3 0f 1f 80 00 00 00 00 41 55 41 54 55 53 48 89
<4>[  259.293179] RSP: 0018:ffffc900012a7ad8 EFLAGS: 00010082
<4>[  259.293182] RAX: 0000000000000000 RBX: 0000000040000000 RCX: 0000000000000002
<4>[  259.293183] RDX: 0000000080000002 RSI: ffffffff820c2b66 RDI: 00000000ffffffff
<4>[  259.293185] RBP: ffff8803fde20000 R08: 0000000000000000 R09: 0000000000000001
<4>[  259.293187] R10: ffffc900012a7a38 R11: 0000000000000000 R12: 0000000040000000
<4>[  259.293188] R13: 0000000000000000 R14: 0000000000000292 R15: ffff8803f9ed92a8
<4>[  259.293190] FS:  0000000000000000(0000) GS:ffff88040e900000(0000) knlGS:0000000000000000
<4>[  259.293192] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  259.293194] CR2: 000056177b8b9520 CR3: 0000000005210004 CR4: 00000000001606e0
<4>[  259.293195] Call Trace:
<4>[  259.293231]  intel_set_cpu_fifo_underrun_reporting+0x247/0x350 [i915]
<4>[  259.293268]  intel_ddi_pre_enable+0x51/0x740 [i915]
<4>[  259.293306]  intel_encoders_pre_enable.isra.65+0x61/0x80 [i915]
<4>[  259.293342]  haswell_crtc_enable+0x98/0x830 [i915]
<4>[  259.293381]  intel_update_crtc+0x45/0x80 [i915]
<4>[  259.293416]  intel_update_crtcs+0x42/0x60 [i915]
<4>[  259.293451]  intel_atomic_commit_tail+0x1c9/0xd00 [i915]
<4>[  259.293491]  intel_atomic_commit+0x240/0x320 [i915]
<4>[  259.293496]  restore_fbdev_mode_atomic+0x1d3/0x1f0
<4>[  259.293506]  drm_fb_helper_restore_fbdev_mode_unlocked+0x42/0x90
<4>[  259.293508]  drm_fb_helper_set_par+0x24/0x50
<4>[  259.293511]  drm_fb_helper_hotplug_event.part.24+0x9d/0xb0
<4>[  259.293514]  drm_kms_helper_hotplug_event+0x21/0x30
<4>[  259.293517]  process_one_work+0x245/0x610
<4>[  259.293524]  worker_thread+0x37/0x380
<4>[  259.293529]  ? process_one_work+0x610/0x610
<4>[  259.293531]  kthread+0x119/0x130
<4>[  259.293534]  ? kthread_park+0x80/0x80
<4>[  259.293539]  ret_from_fork+0x3a/0x50
<4>[  259.293547] irq event stamp: 1020870
<4>[  259.293551] hardirqs last  enabled at (1020869): [<ffffffff810f7e06>] console_unlock+0x1b6/0x5e0
<4>[  259.293554] hardirqs last disabled at (1020870): [<ffffffff8193f62d>] _raw_spin_lock_irqsave+0xd/0x50
<4>[  259.293557] softirqs last  enabled at (1020780): [<ffffffff81c0031d>] __do_softirq+0x31d/0x483
<4>[  259.293560] softirqs last disabled at (1020773): [<ffffffff8108c4b9>] irq_exit+0xa9/0xc0
<4>[  259.293587] WARNING: CPU: 4 PID: 134 at drivers/gpu/drm/i915/i915_irq.c:313 ilk_update_display_irq+0xf2/0x100 [i915]
<4>[  259.293589] ---[ end trace bfa780f20e585d1d ]---