[PATCH] s390: uaccess warnings

Convert __access_ok to an inline C function and change __get_user primitive to
avoid uaccess compiler warnings.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 9 insertions, 7 deletions

diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index ed877d0f27e6..41b197a3f3a3 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -279,7 +279,7 @@ asmlinkage long sys32_getegid16(void)
 
 static inline long get_tv32(struct timeval *o, struct compat_timeval *i)
 {
-        return (!access_ok(VERIFY_READ, tv32, sizeof(*tv32)) ||
+        return (!access_ok(VERIFY_READ, o, sizeof(*o)) ||
                 (__get_user(o->tv_sec, &i->tv_sec) ||
                  __get_user(o->tv_usec, &i->tv_usec)));
 }
diff --git a/include/asm-s390/uaccess.h b/include/asm-s390/uaccess.h
index 10a619da4761..be104f21c70a 100644
--- a/include/asm-s390/uaccess.h
+++ b/include/asm-s390/uaccess.h
@@ -61,8 +61,10 @@
 #define segment_eq(a,b) ((a).ar4 == (b).ar4)
 
 
-#define __access_ok(addr,size) (1)
-
+static inline int __access_ok(const void *addr, unsigned long size)
+{
+        return 1;
+}
 #define access_ok(type,addr,size) __access_ok(addr,size)
 
 /*
@@ -206,25 +208,25 @@ extern int __put_user_bad(void) __attribute__((noreturn));
         case 1: {                                               \
                 unsigned char __x;                              \
                 __get_user_asm(__x, ptr, __gu_err);             \
-                (x) = (__typeof__(*(ptr))) __x;                 \
+                (x) = *(__typeof__(*(ptr)) *) &__x;             \
                 break;                                          \
         };                                                      \
         case 2: {                                               \
                 unsigned short __x;                             \
                 __get_user_asm(__x, ptr, __gu_err);             \
-                (x) = (__typeof__(*(ptr))) __x;                 \
+                (x) = *(__typeof__(*(ptr)) *) &__x;             \
                 break;                                          \
         };                                                      \
         case 4: {                                               \
                 unsigned int __x;                               \
                 __get_user_asm(__x, ptr, __gu_err);             \
-                (x) = (__typeof__(*(ptr))) __x;                 \
+                (x) = *(__typeof__(*(ptr)) *) &__x;             \
                 break;                                          \
         };                                                      \
         case 8: {                                               \
                 unsigned long long __x;                         \
                 __get_user_asm(__x, ptr, __gu_err);             \
-                (x) = (__typeof__(*(ptr))) __x;                 \
+                (x) = *(__typeof__(*(ptr)) *) &__x;             \
                 break;                                          \
         };                                                      \
         default:                                                \