From: Paul Mundt <lethal@linux-sh.org>
Date: Mon, 8 Dec 2008 08:01:40 +0000 (+0900)
Subject: sh: Fix an off-by-1 check in __mutex_fastpath_unlock().
X-Git-Tag: firefly_0821_release~16491^2~64
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=06be3724548a443a99d703ff79f43d6f1e2975f0;p=firefly-linux-kernel-4.4.55.git

sh: Fix an off-by-1 check in __mutex_fastpath_unlock().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

diff --git a/arch/sh/include/asm/mutex-llsc.h b/arch/sh/include/asm/mutex-llsc.h
index a91990c6e8e5..ee839ee58ac8 100644
--- a/arch/sh/include/asm/mutex-llsc.h
+++ b/arch/sh/include/asm/mutex-llsc.h
@@ -73,7 +73,7 @@ __mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
 		: "t");
 
 	__res |= !__ex_flag;
-	if (unlikely(__res != 0))
+	if (unlikely(__res <= 0))
 		fail_fn(count);
 }