[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 <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/s390/kernel/compat_linux.c

···
 
 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)));
 }

include/asm-s390/uaccess.h

···
 #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)
 
 /*
···
 	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:						\