[Bug 100918] New: [APL] igt/gem_workarounds test failed in suspend_resume Subtest

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100918

            Bug ID: 100918
           Summary: [APL] igt/gem_workarounds test failed in
                    suspend_resume Subtest
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: kai.chen at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 131190
  --> https://bugs.freedesktop.org/attachment.cgi?id=131190&action=edit
dmesg log from gem_workarounds failure

On APL, under Linux/Yocto, igt(1.18) gem_workarounds test failed in
suspend_resume subtest.
The test used to pass with an old Yocto image BKC and failed with the latest
BKC, in which the new i915 forklift was merged in.
During debugging, we've found out the regression seemed to be caused by the
patch:
Commit ID: 6aef660370a9c246956ba6d01eebd8063c4214cb
drm/i915/intel_uncore.c: Fix forcewake active domain tracking

By reverting this patch in Linux/Yocto kernel build, the test can pass.
Need review the change and investigate it further for APL platform.

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