[PATCH 0/1][SRU][Unstable/OEM-5.17] Boot stalled on AMD Rembrandt with PSR enabled panel

[You-Sheng Yang]

From: "You-Sheng Yang (vicamo)" <vicamo.yang at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/1969407

[Impact]

On AMD Rembrandt platforms, DMCUB may hang upon a PSR set-version
command is being sent with version equals to PSR_VERSION_UNSUPPORTED.

[Fix]

Upstream commit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1210b17dd4ece454d68a9283f391e3b036aeb010
fixed this issue.

[Test Case]

The symptom are below:
1. The boot process takes more longer than what we usually do
2. After the boot is completed, the touchpad/mouse is almost frozen

So apply the patch and observe if above is still reproducible.

[Where problems could occur]

Trivial fix.

[Other Info]

While this can only be reproduced on v5.17+, only unstable & oem-5.17
are nominated for fix.

Nicholas Kazlauskas (1):
  drm/amd/display: Only set PSR version when valid

 drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c | 4 ++++
 1 file changed, 4 insertions(+)

-- 
2.34.1