1 files changed, 1 insertions, 1 deletions

diff --git a/fs/char_dev.c b/fs/char_dev.c
index e82aac9cc2f5..a69a5d8a406f 100644
--- a/fs/char_dev.c
+++ b/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 &&