From: winstang winstang@amd.com
[ Upstream commit 26c56049cc4f1705b498df013949427692a4b0d5 ]
[Why] prevent invalid memory access
[How] check if dc and stream are NULL
Co-authored-by: winstang winstang@amd.com Reviewed-by: Alvin Lee alvin.lee2@amd.com Acked-by: Zaeem Mohamed zaeem.mohamed@amd.com Signed-off-by: winstang winstang@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 42432af34db29..df84f3b521e22 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -2872,6 +2872,9 @@ 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;