alpha: switch to RAW_COPY_USER

copy_{to,from}_user() uninlined.  We can go back to inlined variants,
if we want to...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2 files changed, 7 insertions, 27 deletions

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 0e49d39ea74a..1be5f61dc630 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -26,6 +26,7 @@ config ALPHA
         select ODD_RT_SIGACTION
         select OLD_SIGSUSPEND
         select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
+        select ARCH_HAS_RAW_COPY_USER
         help
           The Alpha is a 64-bit general-purpose processor designed and
           marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/alpha/include/asm/uaccess.h b/arch/alpha/include/asm/uaccess.h
index 9557c12823a9..7b82dc9a8556 100644
--- a/arch/alpha/include/asm/uaccess.h
+++ b/arch/alpha/include/asm/uaccess.h
@@ -300,37 +300,16 @@ __asm__ __volatile__("1: stb %r2,%1\n"				\
 
 extern long __copy_user(void *to, const void *from, long len);
 
-#define __copy_to_user(to, from, n)                     \
-({                                                      \
-        __chk_user_ptr(to);                             \
-        __copy_user((__force void *)(to), (from), (n)); \
-})
-#define __copy_from_user(to, from, n)                   \
-({                                                      \
-        __chk_user_ptr(from);                           \
-        __copy_user((to), (__force void *)(from), (n)); \
-})
-
-#define __copy_to_user_inatomic __copy_to_user
-#define __copy_from_user_inatomic __copy_from_user
-
-extern inline long
-copy_to_user(void __user *to, const void *from, long n)
+static inline unsigned long
+raw_copy_from_user(void *to, const void __user *from, unsigned long len)
 {
-        if (likely(__access_ok((unsigned long)to, n)))
-                n = __copy_user((__force void *)to, from, n);
-        return n;
+        return __copy_user(to, (__force const void *)from, len);
 }
 
-extern inline long
-copy_from_user(void *to, const void __user *from, long n)
+static inline unsigned long
+raw_copy_to_user(void __user *to, const void *from, unsigned long len)
 {
-        long res = n;
-        if (likely(__access_ok((unsigned long)from, n)))
-                res = __copy_from_user_inatomic(to, from, n);
-        if (unlikely(res))
-                memset(to + (n - res), 0, res);
-        return res;
+        return __copy_user((__force void *)to, from, len);
 }
 
 extern long __clear_user(void __user *to, long len);