Commit c92b4c46 authored Apr 03, 2019 by Nikola Cornij Committed by Alex Deucher Jun 22, 2019

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>

parent 5940ff39

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;

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