6.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Hung <alex.hung@xxxxxxx>
[ Upstream commit 3718a619a8c0a53152e76bb6769b6c414e1e83f4 ]
dcn32_enable_phantom_stream can return null, so returned value
must be checked before used.
This fixes 1 NULL_RETURNS issue reported by Coverity.
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@xxxxxxx>
Signed-off-by: Jerry Zuo <jerry.zuo@xxxxxxx>
Signed-off-by: Alex Hung <alex.hung@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
index 9209bcad699a8..55fbe86383c04 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
@@ -1714,6 +1714,9 @@ void dcn32_add_phantom_pipes(struct dc *dc, struct dc_state *context,
// be a valid candidate for SubVP (i.e. has a plane, stream, doesn't
// already have phantom pipe assigned, etc.) by previous checks.
phantom_stream = dcn32_enable_phantom_stream(dc, context, pipes, pipe_cnt, index);
+ if (!phantom_stream)
+ return;
+
dcn32_enable_phantom_plane(dc, context, phantom_stream, index);
for (i = 0; i < dc->res_pool->pipe_count; i++) {
--
2.43.0
