Commit 35ff747c authored Jun 27, 2024 by Alex Hung Committed by Alex Deucher Jul 23, 2024

drm/amd/display: Check stream before comparing them



[WHAT & HOW]
amdgpu_dm can pass a null stream to dc_is_stream_unchanged. It is
necessary to check for null before dereferencing them.

This fixes 1 FORWARD_NULL issue reported by Coverity.

Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 1ff12bcd

drivers/gpu/drm/amd/display/dc/core/dc_resource.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -3241,6 +3241,8 @@ static bool are_stream_backends_same(
		bool dc_is_stream_unchanged(
		struct dc_stream_state old_stream, struct dc_stream_state stream)
		{
		if (!old_stream \|\| !stream)
		return false;

		if (!are_stream_backends_same(old_stream, stream))
		return false;