drm/atomic: log when CRTC_ID prop value is invalid

Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221019143736.267324-4-contact@emersion.fr

drivers/gpu/drm/drm_atomic_uapi.c

@@ -539,8 +539,12 @@ static int drm_atomic_plane_set_property(struct drm_plane *plane,
 	} else if (property == config->prop_crtc_id) {
 		struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val);
 
-		if (val && !crtc)
+		if (val && !crtc) {
+			drm_dbg_atomic(dev,
+				       "[PROP:%d:%s] cannot find CRTC with ID %llu\n",
+				       property->base.id, property->name, val);
 			return -EACCES;
+		}
 		return drm_atomic_set_crtc_for_plane(state, crtc);
 	} else if (property == config->prop_crtc_x) {
 		state->crtc_x = U642I64(val);
@@ -695,8 +699,12 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector,
 	if (property == config->prop_crtc_id) {
 		struct drm_crtc *crtc = drm_crtc_find(dev, file_priv, val);
 
-		if (val && !crtc)
+		if (val && !crtc) {
+			drm_dbg_atomic(dev,
+				       "[PROP:%d:%s] cannot find CRTC with ID %llu\n",
+				       property->base.id, property->name, val);
 			return -EACCES;
+		}
 		return drm_atomic_set_crtc_for_connector(state, crtc);
 	} else if (property == config->dpms_property) {
 		/* setting DPMS property requires special handling, which