1 files changed, 2 insertions, 3 deletions

diff --git a/arch/s390/lib/uaccess.c b/arch/s390/lib/uaccess.c
index 23f866b4c7f1..7416efe8eae4 100644
--- a/arch/s390/lib/uaccess.c
+++ b/arch/s390/lib/uaccess.c
@@ -338,9 +338,6 @@ static inline unsigned long strnlen_user_srst(const char __user *src,
         register unsigned long reg0 asm("0") = 0;
         unsigned long tmp1, tmp2;
 
-        if (unlikely(!size))
-                return 0;
-        update_primary_asce(current);
         asm volatile(
                 "   la    %2,0(%1)\n"
                 "   la    %3,0(%0,%1)\n"
@@ -359,6 +356,8 @@ static inline unsigned long strnlen_user_srst(const char __user *src,
 
 unsigned long __strnlen_user(const char __user *src, unsigned long size)
 {
+        if (unlikely(!size))
+                return 0;
         update_primary_asce(current);
         return strnlen_user_srst(src, size);
 }