[Bug 80376] [SNB/BDW Regression]igt/kms_flip/vblank-vs-modeset-suspend causes "WARNING: CPU: 2 PID: 1051 at drivers/gpu/drm/i915/i915_irq.c:267 intel_gen6_powersave_work+0xa49/0xf1e [i915]()"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80376

yaoming <ming.yao at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ming.yao at intel.com

--- Comment #10 from yaoming <ming.yao at intel.com> ---
I tested it on the latest
drm-intel-nightly(8980a4380b606860ba0165ed0156a64e79109677)

commit 8980a4380b606860ba0165ed0156a64e79109677
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Mon Aug 4 17:24:12 2014 +0200

    drm-intel-nightly: 2014y-08m-04d-17h-23m-47s integration manifest

root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#  ./kms_flip
--run-                                                                         
              subtest vblank-vs-modeset-suspend
IGT-Version: 1.7-gac31f19 (x86_64) (Linux:
3.16.0-rc6_drm-intel-nightly_8980a4_2                                          
                                             0140805+ x86_64)
Using monotonic timestamps
Beginning vblank-vs-modeset-suspend on crtc 7, connector 18
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
.rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jan 30 03:15:15 2001
.rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jan 30 03:15:47 2001

vblank-vs-modeset-suspend on crtc 7, connector 18: PASSED

Beginning vblank-vs-modeset-suspend on crtc 11, connector 18
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
.rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jan 30 03:16:19 2001
.rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jan 30 03:16:51 2001

vblank-vs-modeset-suspend on crtc 11, connector 18: PASSED

Beginning vblank-vs-modeset-suspend on crtc 15, connector 18
  1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
.rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jan 30 03:17:23 2001
.rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Jan 30 03:17:55 2001

vblank-vs-modeset-suspend on crtc 15, connector 18: PASSED

Subtest vblank-vs-modeset-suspend: SUCCESS


root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg | grep
WARNING
[  531.798589] WARNING: CPU: 3 PID: 4466 at
drivers/gpu/drm/i915/intel_uncore.c:528      
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
[  531.805432] WARNING: CPU: 2 PID: 4451 at drivers/pnp/pnpacpi/core.c:76
pnpacpi_s      et_resources+0x88/0x12e()
[  533.704906] WARNING: CPU: 0 PID: 4461 at
drivers/gpu/drm/i915/intel_uncore.c:528      
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
[  535.626471] WARNING: CPU: 3 PID: 4471 at
drivers/gpu/drm/i915/intel_uncore.c:528      
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
[  537.556136] WARNING: CPU: 3 PID: 4477 at
drivers/gpu/drm/i915/intel_uncore.c:528      
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
[  539.501702] WARNING: CPU: 1 PID: 4465 at
drivers/gpu/drm/i915/intel_uncore.c:528      
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
[  541.446326] WARNING: CPU: 2 PID: 4501 at
drivers/gpu/drm/i915/intel_uncore.c:528      
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()

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