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Commit 7c4696a9 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[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: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 8309f47c

drivers/media/media-entity.c

+23 −0
Original line number Diff line number Diff line
@@ -891,6 +891,7 @@ EXPORT_SYMBOL_GPL(media_devnode_create); 


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 @@ void media_remove_intf_link(struct media_link *link) 
	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);

include/media/media-entity.h

+3 −0
Original line number Diff line number Diff line
@@ -326,6 +326,9 @@ struct media_link *media_create_intf_link(struct media_entity *entity, 
					    struct media_interface *intf,

					    u32 flags);

void media_remove_intf_link(struct media_link *link);

void __media_remove_intf_links(struct media_interface *intf);

void media_remove_intf_links(struct media_interface *intf);





#define media_entity_call(entity, operation, args...)			\

	(((entity)->ops && (entity)->ops->operation) ?			\