drm/amd/display: Grab dc_lock before detecting link

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[Why & How]
There is chance we change dc state while calling dc_link_detect().
As the result of that, grab the dm.dc_lock before detecting link.

Reviewed-by: Hersen Wu <hersen.wu@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Wayne Lin 2022-05-31 17:46:24 +08:00 • committed by Alex Deucher

parent 3d4de92535

commit 15c735e799

2 changed files with 63 additions and 33 deletions

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85

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

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11

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

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