drm/amdgpu/smu: Add message sending lock

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This adds a message lock to the smu_send_smc_msg* implementations to
protect against concurrent access to the mmu registers used to
communicate with the SMU

v2: Implement for smu_v12_0 as well

v3: Add mutex_init for message_lock

Signed-off-by: Matt Coffin <mcoffin13@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Matt Coffin 2020-02-26 16:16:14 -07:00 • committed by Alex Deucher

parent ae458c7b9d

commit eb696d041f

4 changed files with 15 additions and 9 deletions

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1

drivers/gpu/drm/amd/powerplay/amdgpu_smu.c

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1

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

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12

drivers/gpu/drm/amd/powerplay/smu_v11_0.c

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10

drivers/gpu/drm/amd/powerplay/smu_v12_0.c

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