microblaze: uaccess: Fix strncpy_from_user function

Generic implementation for noMMU and MMU version

Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 11 insertions, 3 deletions

diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
index b56d8ae9b17e..fe954b394fdc 100644
--- a/arch/microblaze/include/asm/uaccess.h
+++ b/arch/microblaze/include/asm/uaccess.h
@@ -407,11 +407,19 @@ static inline long copy_to_user(void __user *to,
 }
 
 extern int __strncpy_user(char *to, const char __user *from, int len);
+
+#define __strncpy_from_user     __strncpy_user
+
+static inline long
+strncpy_from_user(char *dst, const char __user *src, long count)
+{
+        if (!access_ok(VERIFY_READ, src, 1))
+                return -EFAULT;
+        return __strncpy_from_user(dst, src, count);
+}
+
 extern int __strnlen_user(const char __user *sstr, int len);
 
-#define strncpy_from_user(to, from, len)        \
-                (access_ok(VERIFY_READ, from, 1) ?      \
-                        __strncpy_user(to, from, len) : -EFAULT)
 #define strnlen_user(str, len)  \
                 (access_ok(VERIFY_READ, str, 1) ? __strnlen_user(str, len) : 0)