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[media] media: au0828 fix to clear enable/disable/change source handlers 

Fix to clear enable/disable/change source handlers in the media device
when media device is unregistered in au0828_unregister_media_device().
When au0828 module is removed, snd-usb-audio shouldn't call the handlers.
Clearing will ensure snd-usb-audio won't call them once au0828 is removed.

[mchehab@osg.samsung.com: fix a compilation breakage]
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Shuah Khan 2016-03-13 00:57:40 -03:00 committed by Mauro Carvalho Chehab
parent 0fed3fcef4
commit ffa8576a53
1 changed files with 5 additions and 0 deletions
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5
drivers/media/usb/au0828/au0828-core.c
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@ -137,6 +137,11 @@ 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;
media_device_unregister(dev->media_dev);
media_device_cleanup(dev->media_dev);
dev->media_dev = NULL;