x86: be more explicit in __put_user_x.

For both __put_user_x and __put_user_8 macros, pass the error
variable explicitly.
Signed-off-by: NGlauber Costa <gcosta@redhat.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

include/asm-x86/uaccess_32.h

@@ -31,11 +31,11 @@ extern void __put_user_2(void);
 extern void __put_user_4(void);
 extern void __put_user_8(void);
 
-#define __put_user_x(size, x, ptr)				\
+#define __put_user_x(size, x, ptr, __ret_pu)			\
 	asm volatile("call __put_user_" #size : "=a" (__ret_pu)	\
 		     :"0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx")
 
-#define __put_user_8(x, ptr)					\
+#define __put_user_8(x, ptr, __ret_pu)				\
 	asm volatile("call __put_user_8" : "=a" (__ret_pu)	\
 		     : "A" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx")
 
@@ -66,19 +66,19 @@ extern void __put_user_8(void);
 	__pu_val = x;						\
 	switch (sizeof(*(ptr))) {				\
 	case 1:							\
-		__put_user_x(1, __pu_val, ptr);			\
+		__put_user_x(1, __pu_val, ptr, __ret_pu);	\
 		break;						\
 	case 2:							\
-		__put_user_x(2, __pu_val, ptr);			\
+		__put_user_x(2, __pu_val, ptr, __ret_pu);	\
 		break;						\
 	case 4:							\
-		__put_user_x(4, __pu_val, ptr);			\
+		__put_user_x(4, __pu_val, ptr, __ret_pu);	\
 		break;						\
 	case 8:							\
-		__put_user_8(__pu_val, ptr);			\
+		__put_user_8(__pu_val, ptr, __ret_pu);		\
 		break;						\
 	default:						\
-		__put_user_x(X, __pu_val, ptr);			\
+		__put_user_x(X, __pu_val, ptr, __ret_pu);	\
 		break;						\
 	}							\
 	__ret_pu;						\