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(parent: 0b61f73) | patch
drm/amdgpu: fix a potential GPU hang on cyan skillfish
authorLang Yu <Lang.Yu@amd.com>
Fri, 28 Jan 2022 10:24:53 +0000 (18:24 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 2 Feb 2022 23:26:31 +0000 (18:26 -0500)
commitd48226f861fe25769e8fca00cb27643f92bb4653
tree9d70c192e3544dad87d5adabcb970a6c018335eftree | snapshot
parent0b61f73c3ba7c4ae49befb33d53f0b267ce7d0a2commit | diff
drm/amdgpu: fix a potential GPU hang on cyan skillfish

We observed a GPU hang when querying GMC CG state(i.e.,
cat amdgpu_pm_info) on cyan skillfish. Acctually, cyan
skillfish doesn't support any CG features.

Just prevent it from accessing GMC CG registers.

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c diff | blob | history
Linux Kernel Source Tree.