From: Wen-chien Jesse Sung <jesse@cola.voip.idv.tw>
Date: Wed, 29 Jun 2005 03:44:41 +0000 (-0700)
Subject: [PATCH] fix semaphore handling in __unregister_chrdev_region
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8d451687ca57371d303c5554b377d7f5c2ac6ae0;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] fix semaphore handling in __unregister_chrdev_region

This up() should be down() instead.

Signed-off-by: Wen-chien Jesse Sung <jesse@cola.voip.idv.tw>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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 &&