From: Max Kellermann max@duempel.org
commit 88336e174645948da269e1812f138f727cd2896b upstream.
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 Signed-off-by: Ben Hutchings ben.hutchings@codethink.co.uk Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/media-devnode.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/media/media-devnode.c b/drivers/media/media-devnode.c index 6c56aebd8db0..86c7c3732c84 100644 --- a/drivers/media/media-devnode.c +++ b/drivers/media/media-devnode.c @@ -282,8 +282,11 @@ int __must_check media_devnode_register(struct media_devnode *mdev, 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; }