The media device itself will be unregistered based on it being unbound and
driver's remove callback being called. The graph objects themselves may
still be in use; rely on the media device release callback to release
them.
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Acked-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/media-device.c | 44 ++++++++++++++++++++------------------------
1 file changed, 20 insertions(+), 24 deletions(-)
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index e9dfc87..7a5884e 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -717,6 +717,26 @@ EXPORT_SYMBOL_GPL(media_device_init);
static void media_device_release(struct media_devnode *devnode)
{
struct media_device *mdev = to_media_device(devnode);
+ struct media_entity *entity;
+ struct media_entity *next;
+ struct media_interface *intf, *tmp_intf;
+ struct media_entity_notify *notify, *nextp;
+
+ /* Remove all entities from the media device */
+ list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list)
+ __media_device_unregister_entity(entity);
+
+ /* Remove all entity_notify callbacks from the media device */
+ list_for_each_entry_safe(notify, nextp, &mdev->entity_notify, list)
+ __media_device_unregister_entity_notify(mdev, notify);
+
+ /* Remove all interfaces from the media device */
+ list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces,
+ graph_obj.list) {
+ __media_remove_intf_links(intf);
+ media_gobj_destroy(&intf->graph_obj);
+ kfree(intf);
+ }
dev_dbg(devnode->parent, "Media device released\n");
@@ -797,38 +817,14 @@ EXPORT_SYMBOL_GPL(__media_device_register);
void media_device_unregister(struct media_device *mdev)
{
- struct media_entity *entity;
- struct media_entity *next;
- struct media_interface *intf, *tmp_intf;
- struct media_entity_notify *notify, *nextp;
-
if (mdev == NULL)
return;
mutex_lock(&mdev->graph_mutex);
-
- /* Check if mdev was ever registered at all */
if (!media_devnode_is_registered(&mdev->devnode)) {
mutex_unlock(&mdev->graph_mutex);
return;
}
-
- /* Remove all entities from the media device */
- list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list)
- __media_device_unregister_entity(entity);
-
- /* Remove all entity_notify callbacks from the media device */
- list_for_each_entry_safe(notify, nextp, &mdev->entity_notify, list)
- __media_device_unregister_entity_notify(mdev, notify);
-
- /* Remove all interfaces from the media device */
- list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces,
- graph_obj.list) {
- __media_remove_intf_links(intf);
- media_gobj_destroy(&intf->graph_obj);
- kfree(intf);
- }
-
mutex_unlock(&mdev->graph_mutex);
device_remove_file(&mdev->devnode.dev, &dev_attr_model);
--
2.1.4
--
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