From 69c953c85c6cca85565ab32e4264b2efb6272e0e Mon Sep 17 00:00:00 2001
From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Date: Wed, 10 Dec 2014 15:51:29 -0800
Subject: [PATCH] lib/lcm.c: lcm(n,0)=lcm(0,n) is 0, not n
Return the mathematically correct answer when an argument is 0.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
lib/lcm.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/lib/lcm.c b/lib/lcm.c
index 01b3aa922dda..51cc6b13cd52 100644
--- a/lib/lcm.c
+++ b/lib/lcm.c
@@ -8,9 +8,7 @@ unsigned long lcm(unsigned long a, unsigned long b)
{
if (a && b)
return (a / gcd(a, b)) * b;
- else if (b)
- return b;
-
- return a;
+ else
+ return 0;
}
EXPORT_SYMBOL_GPL(lcm);
--
2.20.1