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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Delay in skl_disable_plane() causes a system freeze"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104975#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Delay in skl_disable_plane() causes a system freeze"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104975">bug 104975</a>
from <span class="vcard"><a class="email" href="mailto:azhar.shaikh@intel.com" title="Azhar <azhar.shaikh@intel.com>"> <span class="fn">Azhar</span></a>
</span></b>
<pre>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.</pre>
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