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path: root/drivers/media/media-entity.c
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Diffstat (limited to 'drivers/media/media-entity.c')
-rw-r--r--drivers/media/media-entity.c13
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;
}
}