[SRU] [Groovy] [PATCH 0/1] Fix noise lines on i915 + Xorg

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1896091

[Impact]
Noise-like lines of graphics corruption when moving windows in Xorg
sessions.

[Fix]
Revert "UBUNTU: SAUCE: drm/i915: Synchronize active and retire
callbacks".

[Test]
Daniel van Vugt confirmed reverting the commit fixes the issue.
I can also reproduce the issue on one of my system, I can confirm it
fixes the issue too.

[Where problems could occur]
Race condition the commit solves may appear again.
However it was to solve the issue on 5.4, and the race could already be
solved on 5.8.

Kai-Heng Feng (1):
  Revert "UBUNTU: SAUCE: drm/i915: Synchronize active and retire
    callbacks"

 drivers/gpu/drm/i915/i915_active.c       | 52 ++++--------------------
 drivers/gpu/drm/i915/i915_active.h       | 10 +++--
 drivers/gpu/drm/i915/i915_active_types.h |  2 -
 3 files changed, 14 insertions(+), 50 deletions(-)

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2.28.0