Merge tag 'drm-misc-fixes-2017-08-28' of git://anongit.freedesktop.org/git/drm-misc...

[mirror_ubuntu-artful-kernel.git] / lib / lcm.c

diff --git a/lib/lcm.c b/lib/lcm.c
index e97dbd51e7569f6a7ba273227752f2cdbcaebb49..03d7fcb420b5d60c564ad10935011ed8a6556b69 100644 (file)
--- a/lib/lcm.c
+++ b/lib/lcm.c
@@ -12,3 +12,14 @@ unsigned long lcm(unsigned long a, unsigned long b)
                return 0;
 }
 EXPORT_SYMBOL_GPL(lcm);
+
+unsigned long lcm_not_zero(unsigned long a, unsigned long b)
+{
+       unsigned long l = lcm(a, b);
+
+       if (l)
+               return l;
+
+       return (b ? : a);
+}
+EXPORT_SYMBOL_GPL(lcm_not_zero);