[Bug 104975] Delay in skl_disable_plane() causes a system freeze

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104975

--- Comment #13 from Azhar <azhar.shaikh at intel.com> ---
Please find attached log files with :
1. Only DOUBLE_BUFFER_CTL patch with a delay of 10msecs. This causes a crash as
mentioned in this bug.

2. With CONFIG_DRM_I915_DEBUG_VBLANK_EVADE enabled. The system did not crash in
this case, but it did print out below prints many times

[ 3263.045247] [drm] Atomic update on pipe (A) took 123 us, max time under
evasion is 100 us
[ 3929.221242] [drm] Atomic update on pipe (A) took 120 us, max time under
evasion is 100 us
[ 3969.201734] [drm] Atomic update on pipe (A) took 145 us, max time under
evasion is 100 us


Both these were tried on linux-stable 4.15.1

Also in the log messages I have deleted all chromeos specific messages related
to camera and tpm.

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