[SRU] [H/OEM-5.10] [PATCH 0/1] Fix ICL PCH no picture after S3

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1930582

[Impact]
Blank DP display after S3 on Intel GFX in ICL PCH desktop.

[Fix]
Use proper IRQ setup so the system in question can detect HPD after S3.

[Test]
Suspend and resume the system. No picture on DP display.
With the patch applied, DP display works as expected.

[Where problems could occur]
It changes how the Intel GFX setup its HPD IRQ, so hotplug detection
will be affected. This change is limited to ICL PCH.

This is the second patch of "drm/i915/gen9bc: Handle TGP PCH during
suspend/resume", but somehow it was omitted.

Lyude Paul (1):
  drm/i915/icp+: Use icp_hpd_irq_setup() instead of spt_hpd_irq_setup()

 drivers/gpu/drm/i915/i915_irq.c | 2 ++
 1 file changed, 2 insertions(+)

-- 
2.31.1