On 08/30/2015 05:07 AM, Mauro Carvalho Chehab wrote:
> Add functions to explicitly unregister all entity links.
> This function is called automatically when an entity
> link is destroyed.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx>
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
>
> diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
> index c18f4af52771..96303a0ade59 100644
> --- a/drivers/media/media-entity.c
> +++ b/drivers/media/media-entity.c
> @@ -903,6 +903,7 @@ 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);
> }
> @@ -944,3 +945,25 @@ 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);
> diff --git a/include/media/media-entity.h b/include/media/media-entity.h
> index 8c344a07636c..0e7e193a6736 100644
> --- a/include/media/media-entity.h
> +++ b/include/media/media-entity.h
> @@ -318,6 +318,9 @@ 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) ? \
>
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