[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>
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index 065f6f0..0f38444 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -359,6 +359,7 @@
static void media_device_release(struct media_devnode *mdev)
{
+ dev_dbg(mdev->parent, "Media device released\n");
}
/**
@@ -397,6 +398,8 @@
return ret;
}
+ dev_dbg(mdev->dev, "Media device registered\n");
+
return 0;
}
EXPORT_SYMBOL_GPL(__media_device_register);
@@ -416,6 +419,8 @@
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);