drm/amd/display: Switch DMCUB notify idle command to NO_WAIT

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[Why]
Race condition between notification of driver idle and the command being
processed. We could theoretically enter idle between the submission and
the wait for idle that occurs after.

[How]
Switch the notification to NO_WAIT to avoid the RPTR access.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Sung joon Kim <sungjoon.kim@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Nicholas Kazlauskas 2023-12-12 12:10:49 -05:00 • committed by Alex Deucher

parent 4b5c5f5ad3

commit 4e7738bcfb

1 changed files with 2 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c

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