drm/amd/display: Add null check for set_output_gamma in dcn30_set_output_transfer_func

From Srinivasan Shanmugam
ddf9ff244d704e1903533f7be377615ed34b83e7 in linux-6.6.y/6.6.54
08ae395ea22fb3d9b318c8bde28c0dfd2f5fa4d2 in mainline linux

diff --git a/sys/dev/pci/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/sys/dev/pci/drm/amd/display/dc/dcn30/dcn30_hwseq.c
index ba47a1c..d59af32 100644 (file)
--- a/sys/dev/pci/drm/amd/display/dc/dcn30/dcn30_hwseq.c
+++ b/sys/dev/pci/drm/amd/display/dc/dcn30/dcn30_hwseq.c
@@ -214,7 +214,11 @@ bool dcn30_set_output_transfer_func(struct dc *dc,
                }
        }
 
-       mpc->funcs->set_output_gamma(mpc, mpcc_id, params);
+       if (mpc->funcs->set_output_gamma)
+               mpc->funcs->set_output_gamma(mpc, mpcc_id, params);
+       else
+               DC_LOG_ERROR("%s: set_output_gamma function pointer is NULL.\n", __func__);
+
        return ret;
 }