[PATCH] fix semaphore handling in __unregister_chrdev_region

This up() should be down() instead.

Signed-off-by: Wen-chien Jesse Sung <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

fs/char_dev.c

···
 	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 &&