[S390] Avoid compile warning.

arch/s390/mm/fault.c: In function `signal_return':
arch/s390/mm/fault.c:256: warning: unused variable `compat'

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 8b924b359774..d855cdbf8fb8 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -253,7 +253,10 @@ static int signal_return(struct mm_struct *mm, struct pt_regs *regs,
                          unsigned long address, unsigned long error_code)
 {
         u16 instruction;
-        int rc, compat;
+        int rc;
+#ifdef CONFIG_COMPAT
+        int compat;
+#endif
 
         pagefault_disable();
         rc = __get_user(instruction, (u16 __user *) regs->psw.addr);