microblaze: uaccess: fix copy_from_user macro
copy_from_user macro also use copy_tofrom_user function
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
index 125e4cf..b56d8ae 100644
--- a/arch/microblaze/include/asm/uaccess.h
+++ b/arch/microblaze/include/asm/uaccess.h
@@ -375,12 +375,24 @@
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(to, from, n) \
+ __copy_tofrom_user((__force void __user *)(to), \
+ (void __user *)(from), (n))
#define __copy_from_user_inatomic(to, from, n) \
copy_from_user((to), (from), (n))
+static inline long copy_from_user(void *to,
+ const void __user *from, unsigned long n)
+{
+ might_sleep();
+ if (access_ok(VERIFY_READ, from, n))
+ return __copy_from_user(to, from, n);
+ else
+ return n;
+}
+
#define __copy_to_user(to, from, n) \
- __copy_tofrom_user((void __user *)(to), \
+ __copy_tofrom_user((void __user *)(to), \
(__force const void __user *)(from), (n))
#define __copy_to_user_inatomic(to, from, n) copy_to_user((to), (from), (n))
@@ -394,12 +406,6 @@
return n;
}
-#define copy_from_user(to, from, n) \
- (access_ok(VERIFY_READ, (from), (n)) ? \
- __copy_tofrom_user((__force void __user *)(to), \
- (void __user *)(from), (n)) \
- : -EFAULT)
-
extern int __strncpy_user(char *to, const char __user *from, int len);
extern int __strnlen_user(const char __user *sstr, int len);
@@ -411,7 +417,6 @@
#endif /* CONFIG_MMU */
-
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */