diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index ec07f6312445..0621bbb20e0f 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -54,8 +54,7 @@
 #include <linux/string_helpers.h>
 #include "kstrtox.h"
 
-static unsigned long long simple_strntoull(const char *startp, size_t max_chars,
-					   char **endp, unsigned int base)
+static noinline unsigned long long simple_strntoull(const char *startp, size_t max_chars, char **endp, unsigned int base)
 {
 	const char *cp;
 	unsigned long long result = 0ULL;