drm/amd/powerplay: check whether SMU IP is enabled before access

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Since on early phase of bringup, the SMU IP may be not enabled or
supported. Without this, we may hit null pointer dereference on
accessing smu->adev.

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

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Evan Quan 2020-05-25 14:29:10 +08:00 • committed by Alex Deucher

parent 1aad707819

commit 2b7ad277e9

1 changed files with 113 additions and 153 deletions

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

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