[Bug 77717] New: [ILK Regression]igt/drv_suspend/debugfs-reader fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77717

          Priority: medium
            Bug ID: 77717
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [ILK Regression]igt/drv_suspend/debugfs-reader fails
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 97673
  --> https://bugs.freedesktop.org/attachment.cgi?id=97673&action=edit
dmesg

System Environment:
--------------------------
Platform: ILK
kernel:   (drm-intel-nightly)1e771b84e47085ef9b6efea1321e7cb5a8b2c065

Bug detailed description:
----------------------------
igt/drv_suspend/debugfs-reader fails on ILK on -nightly and -fixes branches,
and the test unable to finish in 30 minutes. the test is passed on -next-queued
branch

It's a regression issue:

good commit: 10b6ee4a87811a110cb01eaca01eb04da6801baf
bad commit: b6842feb63a23a6a988f4e1ffb93408d8ff6931e
We will bisect it later.

output on -nightly kernel:
IGT-Version: 1.6-g78e4c2b (x86_64) (Linux:
3.14.0_drm-intel-nightly_1e771b_20140421+ x86_64)
rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Mon Apr 21 19:23:02 2014
rtcwake: write error
Test assertion failure function igt_system_suspend_autoresume, file
igt_aux.c:327:
Last errno: 0, Success
Failed assertion: ret == 0
Subtest debugfs-reader: FAIL


Reproduce steps:
---------------------------- 
1.  ./drv_suspend --run-subtest debugfs-reader

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