1 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/mm/memtest.c b/arch/x86/mm/memtest.c
index 0bcd7883d036..605c8be06217 100644
--- a/arch/x86/mm/memtest.c
+++ b/arch/x86/mm/memtest.c
@@ -100,6 +100,9 @@ static int __init parse_memtest(char *arg)
 {
         if (arg)
                 memtest_pattern = simple_strtoul(arg, NULL, 0);
+        else
+                memtest_pattern = ARRAY_SIZE(patterns);
+
         return 0;
 }