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drm/amd/display: Mark DSC resource as unused after copying to the secondary ODM pipe 

[why]
DSC resource has to be acquired before it can be used and simply copying
a reference to it is very likely to cause problems when accessing DSC.

[how]
Set DSC resource pointer to NULL to mark it as unused after primary pipe
resources were copied to the secondary ODM pipe.

Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nikola Cornij 2019-04-03 12:17:34 -04:00 committed by Alex Deucher
parent 5940ff3941
commit c92b4c46c1
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
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@ -1427,6 +1427,9 @@ static bool dcn20_split_stream_for_combine(
secondary_pipe->plane_res.xfm = pool->transforms[secondary_pipe->pipe_idx];
secondary_pipe->plane_res.dpp = pool->dpps[secondary_pipe->pipe_idx];
secondary_pipe->plane_res.mpcc_inst = pool->dpps[secondary_pipe->pipe_idx]->inst;
#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT
secondary_pipe->stream_res.dsc = NULL;
#endif
if (primary_pipe->bottom_pipe && primary_pipe->bottom_pipe != secondary_pipe) {
ASSERT(!secondary_pipe->bottom_pipe);
secondary_pipe->bottom_pipe = primary_pipe->bottom_pipe;