1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index 37c334edc7e8..4d8e01c7b1b2 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -279,8 +279,14 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
                                 continue;
 
                         ret = entity->ops->link_validate(link);
-                        if (ret < 0 && ret != -ENOIOCTLCMD)
+                        if (ret < 0 && ret != -ENOIOCTLCMD) {
+                                dev_dbg(entity->parent->dev,
+                                        "link validation failed for \"%s\":%u -> \"%s\":%u, error %d\n",
+                                        entity->name, link->source->index,
+                                        link->sink->entity->name,
+                                        link->sink->index, ret);
                                 goto error;
+                        }
                 }
 
                 /* Either no links or validated links are fine. */
@@ -288,6 +294,11 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
 
                 if (!bitmap_full(active, entity->num_pads)) {
                         ret = -EPIPE;
+                        dev_dbg(entity->parent->dev,
+                                "\"%s\":%u must be connected by an enabled link\n",
+                                entity->name,
+                                (unsigned)find_first_zero_bit(
+                                        active, entity->num_pads));
                         goto error;
                 }
         }