From: winstang <winstang@xxxxxxx>
[Why]
prevent invalid memory access
[How]
check if dc and stream are NULL
Co-authored-by: winstang <winstang@xxxxxxx>
Reviewed-by: Alvin Lee <alvin.lee2@xxxxxxx>
Acked-by: Zaeem Mohamed <zaeem.mohamed@xxxxxxx>
Signed-off-by: winstang <winstang@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 45a719fe884e..6d4d4c95243f 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -4754,6 +4754,9 @@ void resource_build_bit_depth_reduction_params(struct dc_stream_state *stream,
enum dc_status dc_validate_stream(struct dc *dc, struct dc_stream_state *stream)
{
+ if (dc == NULL || stream == NULL)
+ return DC_ERROR_UNEXPECTED;
+
struct dc_link *link = stream->link;
struct timing_generator *tg = dc->res_pool->timing_generators[0];
enum dc_status res = DC_OK;
--
2.34.1
