[SRU][OEM-5.14/OEM-5.17/J][PATCH 0/2] Fix system hangs after s2idle on AMD A+A GPU

[Aaron Ma]

BugLink: https://bugs.launchpad.net/bugs/1975804

[Impact]
Sytesm may hang after s2idle on AMD A+A GPU config due to the following
commits:
8b328c64c7082278c888927f00e526786eec2880 ("drm/amdgpu: don't use BACO
for reset in S3") https://bugs.launchpad.net/bugs/1968475
a26d80ba0d9e67ea11cbfc25618320163497d3fe ("drm/amd/pm: keep the BACO
feature enabled for suspend") https://bugs.launchpad.net/bugs/1958371

[Fix]
Revert one commit and don't reset dGPU when s2idle

[Test]
Verified on AMD RMB, stress s2idle passed.

[Where problems could occur]
Low risk, it may break s2idle on AMD platform.

Alex Deucher (1):
  Revert "drm/amd/pm: keep the BACO feature enabled for suspend"

Mario Limonciello (1):
  drm/amd: Don't reset dGPUs if the system is going to s2idle

 drivers/gpu/drm/amd/amdgpu/amdgpu.h       |  2 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c  | 14 ++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c   |  2 +-
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c |  8 +-------
 4 files changed, 18 insertions(+), 8 deletions(-)

-- 
2.36.1