lib/gcd.c: prevent possible div by 0

[platform/adaptation/renesas_rcar/renesas_kernel.git] / lib / gcd.c

diff --git a/lib/gcd.c b/lib/gcd.c
index cce4f3c..3657f12 100644 (file)
--- a/lib/gcd.c
+++ b/lib/gcd.c
@@ -9,6 +9,9 @@ unsigned long gcd(unsigned long a, unsigned long b)
 
        if (a < b)
                swap(a, b);
+
+       if (!b)
+               return a;
        while ((r = a % b) != 0) {
                a = b;
                b = r;