diff options
| author | Greg Ungerer <gerg@snapgear.com> | 2006-07-13 09:32:41 +1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-13 07:51:48 -0700 |
| commit | 1b0f06d0b4860a8a73dc0b48540d82d8897ead71 (patch) | |
| tree | daeca25611fa75a1439f35b54d1586e24ea77478 | |
| parent | b43c7cec6bf9558336fb033d1217fc765d259c47 (diff) | |
| download | lwn-1b0f06d0b4860a8a73dc0b48540d82d8897ead71.tar.gz lwn-1b0f06d0b4860a8a73dc0b48540d82d8897ead71.zip | |
[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 <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/asm-m68knommu/uaccess.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/include/asm-m68knommu/uaccess.h b/include/asm-m68knommu/uaccess.h index 05be9515a2d2..62b29b10bc6d 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) |