mn10300: switch to RAW_COPY_USER

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

arch/mn10300/Kconfig

@@ -16,6 +16,7 @@ config MN10300
 	select OLD_SIGACTION
 	select HAVE_DEBUG_STACKOVERFLOW
 	select ARCH_NO_COHERENT_DMA_MMAP
+	select ARCH_HAS_RAW_COPY_USER
 
 config AM33_2
 	def_bool n

arch/mn10300/include/asm/uaccess.h

@@ -275,49 +275,20 @@ do {									\
 	}								\
 } while (0)
 
-/* We let the __ versions of copy_from/to_user inline, because they're often
- * used in fast paths and have only a small space overhead.
- */
-static inline
-unsigned long __copy_from_user_inatomic(void *to, const void __user *from,
-					       unsigned long n)
+static inline unsigned long
+raw_copy_from_user(void *to, const void __user *from, unsigned long n)
 {
 	__copy_user(to, from, n);
 	return n;
 }
 
-static inline
-unsigned long __copy_to_user_inatomic(void __user *to, const void *from,
-					     unsigned long n)
+static inline unsigned long
+raw_copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	__copy_user(to, from, n);
 	return n;
 }
 
-
-extern unsigned long __generic_copy_to_user(void __user *, const void *,
-					    unsigned long);
-extern unsigned long __generic_copy_from_user(void *, const void __user *,
-					      unsigned long);
-
-static inline unsigned long __copy_to_user(void __user *to, const void *from,
-						unsigned long n)
-{
-	might_fault();
-	return __copy_to_user_inatomic(to, from, n);
-}
-
-static inline unsigned long __copy_from_user(void *to, const void __user *from,
-						unsigned long n)
-{
-	might_fault();
-	return __copy_from_user_inatomic(to, from, n);
-}
-
-
-#define copy_to_user(to, from, n)   __generic_copy_to_user((to), (from), (n))
-#define copy_from_user(to, from, n) __generic_copy_from_user((to), (from), (n))
-
 extern long strncpy_from_user(char *dst, const char __user *src, long count);
 extern long __strncpy_from_user(char *dst, const char __user *src, long count);
 extern long strnlen_user(const char __user *str, long n);

arch/mn10300/kernel/mn10300_ksyms.c

@@ -26,8 +26,6 @@ EXPORT_SYMBOL(strncpy_from_user);
 EXPORT_SYMBOL(__strncpy_from_user);
 EXPORT_SYMBOL(clear_user);
 EXPORT_SYMBOL(__clear_user);
-EXPORT_SYMBOL(__generic_copy_from_user);
-EXPORT_SYMBOL(__generic_copy_to_user);
 EXPORT_SYMBOL(strnlen_user);
 
 extern u64 __ashrdi3(u64, unsigned);

arch/mn10300/lib/usercopy.c

@@ -11,25 +11,6 @@
  */
 #include <linux/uaccess.h>
 
-unsigned long
-__generic_copy_to_user(void *to, const void *from, unsigned long n)
-{
-	if (access_ok(VERIFY_WRITE, to, n))
-		__copy_user(to, from, n);
-	return n;
-}
-
-unsigned long
-__generic_copy_from_user(void *to, const void *from, unsigned long n)
-{
-	unsigned long res = n;
-	if (access_ok(VERIFY_READ, from, res))
-		__copy_user(to, from, res);
-	if (unlikely(res))
-		memset(to + n - res, 0, res);
-	return res;
-}
-
 /*
  * Copy a null terminated string from userspace.
  */