[media] media-devnode: add missing mutex lock in error handler
We should protect the device unregister patch too, at the error
condition.
Signed-off-by: Max Kellermann <max@duempel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/media-devnode.c b/drivers/media/media-devnode.c
index 29409f4..64a4b1e 100644
--- a/drivers/media/media-devnode.c
+++ b/drivers/media/media-devnode.c
@@ -267,8 +267,11 @@
return 0;
error:
+ mutex_lock(&media_devnode_lock);
cdev_del(&mdev->cdev);
clear_bit(mdev->minor, media_devnode_nums);
+ mutex_unlock(&media_devnode_lock);
+
return ret;
}