[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>

diff --git a/include/asm-avr32/uaccess.h b/include/asm-avr32/uaccess.h
index 74a679e..ed09239 100644 (file)
--- 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;                                                       \
 })