[PATCH] drivers/media/media-devnode: add missing mutex lock in error handler

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---
 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 cea35bf..4d7e8dd 100644
--- a/drivers/media/media-devnode.c
+++ b/drivers/media/media-devnode.c
@@ -266,8 +266,11 @@ 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;
 }
 

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