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[media] au0828: Unregister notifiers 

If au0828 gets removed, we need to remove the notifiers.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-03-16 05:04:04 -07:00
parent 88336e1746
commit bc5ccdbc99
1 changed files with 25 additions and 11 deletions
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36
drivers/media/usb/au0828/au0828-core.c
View File

@ -131,22 +131,36 @@ static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
return status;
}
#ifdef CONFIG_MEDIA_CONTROLLER
static void au0828_media_graph_notify(struct media_entity *new,
void *notify_data);
#endif
static void au0828_unregister_media_device(struct au0828_dev *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
if (dev->media_dev &&
media_devnode_is_registered(&dev->media_dev->devnode)) {
/* clear enable_source, disable_source */
dev->media_dev->source_priv = NULL;
dev->media_dev->enable_source = NULL;
dev->media_dev->disable_source = NULL;
struct media_device *mdev = dev->media_dev;
struct media_entity_notify *notify, *nextp;
media_device_unregister(dev->media_dev);
media_device_cleanup(dev->media_dev);
kfree(dev->media_dev);
dev->media_dev = NULL;
if (!mdev || !media_devnode_is_registered(&mdev->devnode))
return;
/* Remove au0828 entity_notify callbacks */
list_for_each_entry_safe(notify, nextp, &mdev->entity_notify, list) {
if (notify->notify != au0828_media_graph_notify)
continue;
media_device_unregister_entity_notify(mdev, notify);
}
/* clear enable_source, disable_source */
dev->media_dev->source_priv = NULL;
dev->media_dev->enable_source = NULL;
dev->media_dev->disable_source = NULL;
media_device_unregister(dev->media_dev);
media_device_cleanup(dev->media_dev);
kfree(dev->media_dev);
dev->media_dev = NULL;
#endif
}