[AVR32] Fix compile error with gcc 4.1

gcc 4.1 doesn't seem to like const variables as inline assembly
outputs. Drop support for reading 64-bit values using get_user() so
that we can use an unsigned long to hold the result regardless of the
actual size. This should be safe since many architectures, including
i386, doesn't support reading 64-bit values with get_user().

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 4 insertions, 9 deletions

diff --git a/include/asm-avr32/uaccess.h b/include/asm-avr32/uaccess.h
index 74a679e9098c..ed092395215e 100644
--- a/include/asm-avr32/uaccess.h
+++ b/include/asm-avr32/uaccess.h
@@ -181,24 +181,23 @@ extern int __put_user_bad(void);
 
 #define __get_user_nocheck(x, ptr, size)                                \
 ({                                                                      \
-        typeof(*(ptr)) __gu_val = (typeof(*(ptr)) __force)0;            \
+        unsigned long __gu_val = 0;                                     \
         int __gu_err = 0;                                               \
                                                                         \
         switch (size) {                                                 \
         case 1: __get_user_asm("ub", __gu_val, ptr, __gu_err); break;   \
         case 2: __get_user_asm("uh", __gu_val, ptr, __gu_err); break;   \
         case 4: __get_user_asm("w", __gu_val, ptr, __gu_err); break;    \
-        case 8: __get_user_asm("d", __gu_val, ptr, __gu_err); break;    \
         default: __gu_err = __get_user_bad(); break;                    \
         }                                                               \
                                                                         \
-        x = __gu_val;                                                   \
+        x = (typeof(*(ptr)))__gu_val;                                   \
         __gu_err;                                                       \
 })
 
 #define __get_user_check(x, ptr, size)                                  \
 ({                                                                      \
-        typeof(*(ptr)) __gu_val = (typeof(*(ptr)) __force)0;            \
+        unsigned long __gu_val = 0;                                     \
         const typeof(*(ptr)) __user * __gu_addr = (ptr);                \
         int __gu_err = 0;                                               \
                                                                         \
@@ -216,10 +215,6 @@ extern int __put_user_bad(void);
                         __get_user_asm("w", __gu_val, __gu_addr,        \
                                        __gu_err);                       \
                         break;                                          \
-                case 8:                                                 \
-                        __get_user_asm("d", __gu_val, __gu_addr,        \
-                                       __gu_err);                       \
-                        break;                                          \
                 default:                                                \
                         __gu_err = __get_user_bad();                    \
                         break;                                          \
@@ -227,7 +222,7 @@ extern int __put_user_bad(void);
         } else {                                                        \
                 __gu_err = -EFAULT;                                     \
         }                                                               \
-        x = __gu_val;                                                   \
+        x = (typeof(*(ptr)))__gu_val;                                   \
         __gu_err;                                                       \
 })