--- a/sys/dev/drm/radeon/trinity_smc.c	2026-10-01 02:42:43.448792892 +0000
+++ b/sys/dev/drm/radeon/trinity_smc.c	2026-10-01 02:42:43.464792687 +0000
@@ -48,6 +48,9 @@
 			DRM_ERROR("Unknown SMC message!\n");
 			return -EINVAL;
 		}
+		DRM_ERROR("SMC message %#x: unexpected response %#x (timeout)\n",
+			  id, v);
+		return -EINVAL;
 	}
 
 	return 0;