[PATCH 0/1][SRU][OEM-OSP1-B] X crashes if set to external monitor only and then remove HDMI cable during suspend

[AceLan Kao]

BugLink: https://bugs.launchpad.net/bugs/1856517

[Impact]
Connect a type-c to HDMI converter to the machine and set the display to
external monitor only, the X crashes when resumed if you unplug the cable
during suspend(s2idle).

[Fix]
The fix is provided by upstream
https://github.com/djdeath/linux/commit/896d4375e8e986e9f70173ac2d2463ecfa92fad8

[Test]
Verified on Dell machine, can't reproduce this issue and no visible
regression can be observed.

[Regression Potential]
Low, it pass fwts suspend test 30 times, and no any regression can be
observed.

Lionel Landwerlin (1):
  drm/i915/icl: add missing GT workaround

 drivers/gpu/drm/i915/i915_reg.h          | 3 +++
 drivers/gpu/drm/i915/intel_workarounds.c | 6 ++++++
 2 files changed, 9 insertions(+)

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2.17.1