[Bug 64379] New: [HSW desktop bisected]Resume from S3 with call trace

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64379

          Priority: medium
            Bug ID: 64379
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW desktop bisected]Resume from S3 with call trace
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: All
          Reporter: cancan.feng at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 79040
  --> https://bugs.freedesktop.org/attachment.cgi?id=79040&action=edit
dmesg of calltrace caused by S3

System Environment:
--------------------------------------------
The Linux Kernel, the operating system core itself
Kernel: (drm-intel-next-queued)38f6e314f7e0eee4cd5e4495ae58ff3b5645ce62
Some additional commit info:
Author: Damien Lespiau <damien.lespiau at intel.com>
Date:   Fri May 3 18:48:11 2013 +0100

    drm/i915: Add references to some workaround we implement

Bug detailed description:
--------------------------------------------
Call trace will happen after resume from S3. The machine can suspend to S3
successfully, but resume from S3 with call trace. I attached the dmesg in the
attachment.

Bisect result:
--------------------------------------------
24576d23976746cb52e7700c4cadbf4bc1bc3472 is the first bad commit 
commit 24576d23976746cb52e7700c4cadbf4bc1bc3472
Author: Jesse Barnes <jbarnes at virtuousgeek.org>
Date:   Tue Mar 26 09:25:45 2013 -0700

    drm/i915: enable VT switchless resume v3

    With the other bits in place, we can do this safely.

    v2: disable backlight on suspend to prevent premature enablement on resume
    v3: disable CRTCs on suspend to allow RTD3 (Kristen)

    Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
    Reviewed-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

:040000 040000 72fb279ebc4c48824015f43eac459d046dde3204
6797fd617ffd75b6e2a457aaabf5e90f9a4021c0 M    drivers

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