[S390] Fix sparse warnings.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 833d594..7cd8257 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -144,7 +144,7 @@
 #endif
 	si.si_signo = SIGSEGV;
 	si.si_code = si_code;
-	si.si_addr = (void *) address;
+	si.si_addr = (void __user *) address;
 	force_sig_info(SIGSEGV, &si, current);
 }