microblaze: Simple __copy_tofrom_user for noMMU

This is first patch which clear part of uaccess.h.
uaccess.h will be clear later.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>

2 files changed, 13 insertions, 6 deletions

diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
index 5431b4631a7a..371bd6e56d9a 100644
--- a/arch/microblaze/include/asm/uaccess.h
+++ b/arch/microblaze/include/asm/uaccess.h
@@ -272,8 +272,9 @@ static inline int clear_user(char *to, int size)
         return size;
 }
 
-extern unsigned long __copy_tofrom_user(void __user *to,
-                const void __user *from, unsigned long size);
+#define __copy_from_user(to, from, n)   copy_from_user((to), (from), (n))
+#define __copy_from_user_inatomic(to, from, n) \
+                copy_from_user((to), (from), (n))
 
 #define copy_to_user(to, from, n)                                       \
         (access_ok(VERIFY_WRITE, (to), (n)) ?                           \
@@ -290,10 +291,6 @@ extern unsigned long __copy_tofrom_user(void __user *to,
                         (void __user *)(from), (n))                     \
                 : -EFAULT)
 
-#define __copy_from_user(to, from, n)   copy_from_user((to), (from), (n))
-#define __copy_from_user_inatomic(to, from, n) \
-                copy_from_user((to), (from), (n))
-
 extern int __strncpy_user(char *to, const char __user *from, int len);
 extern int __strnlen_user(const char __user *sstr, int len);
 
@@ -305,6 +302,9 @@ extern int __strnlen_user(const char __user *sstr, int len);
 
 #endif /* CONFIG_MMU */
 
+extern unsigned long __copy_tofrom_user(void __user *to,
+                const void __user *from, unsigned long size);
+
 /*
  * The exception table consists of pairs of addresses: the first is the
  * address of an instruction that is allowed to fault, and the second is
diff --git a/arch/microblaze/lib/uaccess.c b/arch/microblaze/lib/uaccess.c
index 8eb9df5a26c9..a853fe089c44 100644
--- a/arch/microblaze/lib/uaccess.c
+++ b/arch/microblaze/lib/uaccess.c
@@ -39,3 +39,10 @@ long strncpy_from_user(char *dst, const char __user *src, long count)
                 __do_strncpy_from_user(dst, src, count, res);
         return res;
 }
+
+unsigned long __copy_tofrom_user(void __user *to,
+                const void __user *from, unsigned long size)
+{
+        memcpy(to, from, size);
+        return 0;
+}