diff --git a/[refs] b/[refs]
index 121af6a912d6..b205b7dd08c3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7e568e62e9d4674d487cdc11f369e49e56ce6703
+refs/heads/master: 8d451687ca57371d303c5554b377d7f5c2ac6ae0
diff --git a/trunk/fs/char_dev.c b/trunk/fs/char_dev.c
index e82aac9cc2f5..a69a5d8a406f 100644
--- a/trunk/fs/char_dev.c
+++ b/trunk/fs/char_dev.c
@@ -150,7 +150,7 @@ __unregister_chrdev_region(unsigned major, unsigned baseminor, int minorct)
 	struct char_device_struct *cd = NULL, **cp;
 	int i = major_to_index(major);
 
-	up(&chrdevs_lock);
+	down(&chrdevs_lock);
 	for (cp = &chrdevs[i]; *cp; cp = &(*cp)->next)
 		if ((*cp)->major == major &&
 		    (*cp)->baseminor == baseminor &&