[Bug 96701] [APL] [BAT] kms_cursor_legacy some subtest causes [i915]] *ERROR* Potential atomic update failure on pipe

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96701

Imre Deak <imre.deak at intel.com> changed:

           What    |Removed                     |Added
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 Attachment #125128|0                           |1
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--- Comment #19 from Imre Deak <imre.deak at intel.com> ---
Created attachment 125229
  --> https://bugs.freedesktop.org/attachment.cgi?id=125229&action=edit
mutex starvation fix

There are two issues reported in this bug, since they are independent, please
open a new ticket for the first one:
(kms_cursor_legacy:1365) WARNING: page flip 1 was delayed, missed 23 frames
and
[drm:intel_pipe_update_start [i915]] *ERROR* Potential atomic update failure on
pipe A

For the first issue I attached a kernel fix that is being discussed at
https://lkml.org/lkml/2016/7/18/659
and
https://lkml.org/lkml/2016/7/20/38

This is instead of the IGT fix, could you please give it a try?

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