From 1b0f06d0b4860a8a73dc0b48540d82d8897ead71 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Thu, 13 Jul 2006 09:32:41 +1000 Subject: [PATCH] [PATCH] m68knommu: fix result type in get_user() macro Keep the result holder variable the same type as the quantity we are retreiving in the get_user() macro - don't go through a pointer version of the user space address type. Using the address type causes problems if the address type was const (newer versions of gcc quite rightly error out for that condition). Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- include/asm-m68knommu/uaccess.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/include/asm-m68knommu/uaccess.h b/include/asm-m68knommu/uaccess.h index 05be9515a2d..62b29b10bc6 100644 --- a/include/asm-m68knommu/uaccess.h +++ b/include/asm-m68knommu/uaccess.h @@ -93,7 +93,7 @@ extern int __put_user_bad(void); #define get_user(x, ptr) \ ({ \ int __gu_err = 0; \ - typeof(*(ptr)) __gu_val = 0; \ + typeof(x) __gu_val = 0; \ switch (sizeof(*(ptr))) { \ case 1: \ __get_user_asm(__gu_err, __gu_val, ptr, b, "=d"); \ @@ -105,23 +105,23 @@ extern int __put_user_bad(void); __get_user_asm(__gu_err, __gu_val, ptr, l, "=r"); \ break; \ case 8: \ - memcpy(&__gu_val, ptr, sizeof (*(ptr))); \ + memcpy((void *) &__gu_val, ptr, sizeof (*(ptr))); \ break; \ default: \ __gu_val = 0; \ __gu_err = __get_user_bad(); \ break; \ } \ - (x) = __gu_val; \ + (x) = (typeof(*(ptr))) __gu_val; \ __gu_err; \ }) #define __get_user(x, ptr) get_user(x, ptr) extern int __get_user_bad(void); -#define __get_user_asm(err,x,ptr,bwl,reg) \ - __asm__ ("move" #bwl " %1,%0" \ - : "=d" (x) \ +#define __get_user_asm(err,x,ptr,bwl,reg) \ + __asm__ ("move" #bwl " %1,%0" \ + : "=d" (x) \ : "m" (*__ptr(ptr))) #define copy_from_user(to, from, n) (memcpy(to, from, n), 0) -- 2.41.1