[Bug 81948] New: [BYT-M Regression]System unable resume from S3/S4

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81948

          Priority: high
            Bug ID: 81948
          Keywords: bisect_pending
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BYT-M Regression]System unable resume from S3/S4
        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

==System Environment==
--------------------------
Regression: Yes. 
Good commit on -next-queued: 1cf0ba14740d96fbf6f58a201f000a34b74f4725

Non-working platforms: BYT-M

==kernel==
--------------------------
origin/drm-intel-nightly: c95053d599112ec3b8c27a632e3c1544558891a4(fails)
    drm-intel-nightly: 2014y-07m-30d-22h-36m-53s integration manifest
origin/drm-intel-next-queued: 5193109cd669c7990b043a7187548546c16f8af3(fails)
    drm/i915: Align intel_dsi*.c files a bit
origin/drm-intel-fixes: f4be89cecea437aaddd7700d05c6bdb5678041f7(works)
    drm/i915: Fix crash when failing to parse MIPI VBT

==Bug detailed description==
System unable resume from S3/S4


==Reproduce steps==
---------------------------- 
1. echo mem >/sys/power/state
2. Press power button

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