drm/amdgpu: fix possible pstate switch race condition

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Added lock protection so that the p-state switch will
be guarded to be sequential. Also update the hive
pstate only all device from the hive are in the same
state.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Evan Quan 2019-10-31 14:15:29 +08:00 • committed by Alex Deucher

parent b0adca4d50

commit 5c5b2ba006

2 changed files with 35 additions and 2 deletions

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3

drivers/gpu/drm/amd/amdgpu/amdgpu.h

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34

drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c

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