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[media] media: add messages when media device gets (un)registered 

We can only free the media device after being sure that no
graph object is used.

In order to help tracking it, let's add debug messages
that will print when the media controller gets registered
or unregistered.

Acked-by: Hans Verkuil <hans.verkuil@cisco.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 2015-08-13 15:22:24 -03:00
parent 6b6a427805
commit 8f5a3188fb
1 changed files with 5 additions and 0 deletions
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5
drivers/media/media-device.c
View File

@ -359,6 +359,7 @@ static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
static void media_device_release(struct media_devnode *mdev)
{
dev_dbg(mdev->parent, "Media device released\n");
}
/**
@ -397,6 +398,8 @@ int __must_check __media_device_register(struct media_device *mdev,
return ret;
}
dev_dbg(mdev->dev, "Media device registered\n");
return 0;
}
EXPORT_SYMBOL_GPL(__media_device_register);
@ -416,6 +419,8 @@ void media_device_unregister(struct media_device *mdev)
device_remove_file(&mdev->devnode.dev, &dev_attr_model);
media_devnode_unregister(&mdev->devnode);
dev_dbg(mdev->dev, "Media device unregistered\n");
}
EXPORT_SYMBOL_GPL(media_device_unregister);