[media] media-entity: unregister entity links
Add functions to explicitly unregister all entity links.
This function is called automatically when an entity
link is destroyed.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index 1b2fd72..ceae708 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -891,6 +891,7 @@
void media_devnode_remove(struct media_intf_devnode *devnode)
{
+ media_remove_intf_links(&devnode->intf);
media_gobj_remove(&devnode->intf.graph_obj);
kfree(devnode);
}
@@ -932,3 +933,25 @@
mutex_unlock(&link->graph_obj.mdev->graph_mutex);
}
EXPORT_SYMBOL_GPL(media_remove_intf_link);
+
+void __media_remove_intf_links(struct media_interface *intf)
+{
+ struct media_link *link, *tmp;
+
+ list_for_each_entry_safe(link, tmp, &intf->links, list)
+ __media_remove_intf_link(link);
+
+}
+EXPORT_SYMBOL_GPL(__media_remove_intf_links);
+
+void media_remove_intf_links(struct media_interface *intf)
+{
+ /* Do nothing if the intf is not registered. */
+ if (intf->graph_obj.mdev == NULL)
+ return;
+
+ mutex_lock(&intf->graph_obj.mdev->graph_mutex);
+ __media_remove_intf_links(intf);
+ mutex_unlock(&intf->graph_obj.mdev->graph_mutex);
+}
+EXPORT_SYMBOL_GPL(media_remove_intf_links);