All tests - incomplete - Power well 2 on. WARNING: .* at drivers/gpu/drm/i915/display/intel_display_power.c:\d+ bxt_enable_dc9

https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_5127/shard-glk4/igt@gem_workarounds@suspend-resume.html#dmesg-warnings195

<4> [577.838820] i915 0000:00:02.0: Power well 2 on.
<4> [577.838964] WARNING: CPU: 1 PID: 1236 at drivers/gpu/drm/i915/display/intel_display_power.c:731 bxt_enable_dc9+0x1b1/0x1c0 [i915]
<4> [577.838969] Modules linked in: vgem mei_hdcp snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio btusb btrtl btbcm btintel x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul bluetooth ghash_clmulni_intel ecdh_generic ecc r8169 i915 realtek i2c_hid snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm mei_me mei pinctrl_geminilake prime_numbers [last unloaded: dmabuf_selftests]
<4> [577.839104] CPU: 1 PID: 1236 Comm: kworker/u8:24 Not tainted 5.10.0-rc2-CI-CI_DRM_9265+ #1
<4> [577.839108] Hardware name: Intel Corporation NUC7CJYH/NUC7JYB, BIOS JYGLKCPX.86A.0027.2018.0125.1347 01/25/2018
<4> [577.839117] Workqueue: events_unbound async_run_entry_fn
<4> [577.839220] RIP: 0010:bxt_enable_dc9+0x1b1/0x1c0 [i915]
<4> [577.839226] Code: c6 05 fe 07 20 00 01 48 8b 6f 50 48 85 ed 75 03 48 8b 2f e8 31 f0 4f e1 48 89 ea 48 c7 c7 9b 77 34 a0 48 89 c6 e8 62 63 84 e1 <0f> 0b e9 b9 fe ff ff 0f 1f 84 00 00 00 00 00 55 53 48 89 fb e8 56
<4> [577.839230] RSP: 0018:ffffc9000083bd88 EFLAGS: 00010282
<4> [577.839238] RAX: 0000000000000000 RBX: ffff888118cd0000 RCX: 0000000000000001
<4> [577.839242] RDX: 0000000080000001 RSI: ffffffff823b58fe RDI: 00000000ffffffff
<4> [577.839246] RBP: ffff88810161eb90 R08: 0000000000000001 R09: 0000000000000001
<4> [577.839251] R10: 00000000ffaf40b7 R11: 00000000942fd8fd R12: ffff888101634000
<4> [577.839255] R13: ffff888118cdba38 R14: 0000000000000002 R15: ffff888122c677e0
<4> [577.839259] FS:  0000000000000000(0000) GS:ffff888277c80000(0000) knlGS:0000000000000000
<4> [577.839264] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [577.839268] CR2: 0000559829431898 CR3: 000000010a772000 CR4: 0000000000350ee0
<4> [577.839272] Call Trace:
<4> [577.839357]  i915_drm_suspend_late+0x58/0xf0 [i915]
<4> [577.839367]  ? pci_pm_poweroff_late+0x30/0x30
<4> [577.839374]  dpm_run_callback+0x5f/0x240
<4> [577.839384]  __device_suspend_late+0x8b/0x180
<4> [577.839392]  async_suspend_late+0x15/0x90
<4> [577.839398]  async_run_entry_fn+0x34/0x160
<4> [577.839409]  process_one_work+0x270/0x5c0
<4> [577.839428]  worker_thread+0x37/0x380
<4> [577.839453]  ? process_one_work+0x5c0/0x5c0
<4> [577.839461]  kthread+0x146/0x170
<4> [577.839467]  ? kthread_park+0x80/0x80
<4> [577.839478]  ret_from_fork+0x1f/0x30
<4> [577.839505] CPU: 1 PID: 1236 Comm: kworker/u8:24 Not tainted 5.10.0-rc2-CI-CI_DRM_9265+ #1
<4> [577.839508] Hardware name: Intel Corporation NUC7CJYH/NUC7JYB, BIOS JYGLKCPX.86A.0027.2018.0125.1347 01/25/2018
<4> [577.839512] Workqueue: events_unbound async_run_entry_fn
<4> [577.839518] Call Trace:
<4> [577.839527]  dump_stack+0x77/0x97
<4> [577.839537]  __warn.cold.14+0xe/0x4b
<4> [577.839633]  ? bxt_enable_dc9+0x1b1/0x1c0 [i915]
<4> [577.839643]  report_bug+0xbd/0xf0
<4> [577.839649]  ? mark_held_locks+0x48/0x70
<4> [577.839659]  handle_bug+0x3f/0x70
<4> [577.839664]  exc_invalid_op+0x13/0x60
<4> [577.839670]  asm_exc_invalid_op+0x12/0x20
<4> [577.839766] RIP: 0010:bxt_enable_dc9+0x1b1/0x1c0 [i915]
<4> [577.839770] Code: c6 05 fe 07 20 00 01 48 8b 6f 50 48 85 ed 75 03 48 8b 2f e8 31 f0 4f e1 48 89 ea 48 c7 c7 9b 77 34 a0 48 89 c6 e8 62 63 84 e1 <0f> 0b e9 b9 fe ff ff 0f 1f 84 00 00 00 00 00 55 53 48 89 fb e8 56
<4> [577.839774] RSP: 0018:ffffc9000083bd88 EFLAGS: 00010282
<4> [577.839780] RAX: 0000000000000000 RBX: ffff888118cd0000 RCX: 0000000000000001
<4> [577.839784] RDX: 0000000080000001 RSI: ffffffff823b58fe RDI: 00000000ffffffff
<4> [577.839787] RBP: ffff88810161eb90 R08: 0000000000000001 R09: 0000000000000001
<4> [577.839790] R10: 00000000ffaf40b7 R11: 00000000942fd8fd R12: ffff888101634000
<4> [577.839793] R13: ffff888118cdba38 R14: 0000000000000002 R15: ffff888122c677e0
<4> [577.839909]  ? bxt_enable_dc9+0x1b1/0x1c0 [i915]
<4> [577.839990]  i915_drm_suspend_late+0x58/0xf0 [i915]
<4> [577.839997]  ? pci_pm_poweroff_late+0x30/0x30
<4> [577.840002]  dpm_run_callback+0x5f/0x240
<4> [577.840011]  __device_suspend_late+0x8b/0x180
<4> [577.840018]  async_suspend_late+0x15/0x90
<4> [577.840024]  async_run_entry_fn+0x34/0x160
<4> [577.840032]  process_one_work+0x270/0x5c0
<4> [577.840051]  worker_thread+0x37/0x380
<4> [577.840060]  ? process_one_work+0x5c0/0x5c0
<4> [577.840065]  kthread+0x146/0x170
<4> [577.840070]  ? kthread_park+0x80/0x80
<4> [577.840078]  ret_from_fork+0x1f/0x30
<4> [577.840104] irq event stamp: 1227
<4> [577.840110] hardirqs last  enabled at (1235): [<ffffffff81129442>] vprintk_emit+0x362/0x380
<4> [577.840115] hardirqs last disabled at (1242): [<ffffffff811293f1>] vprintk_emit+0x311/0x380
<4> [577.840120] softirqs last  enabled at (498): [<ffffffff81e00342>] __do_softirq+0x342/0x48e
<4> [577.840125] softirqs last disabled at (485): [<ffffffff81c00f4f>] asm_call_irq_on_stack+0xf/0x20
<4> [577.840129] ---[ end trace 9d2f86e6cc2cb507 ]---