diff --git a/[refs] b/[refs]
index 53297fe70750..87120ba4f5f4 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7c43f2b888f9ca1fcb7b07abc4cbff4ca1b8e03b
+refs/heads/master: cc4191dc1d1ec3282d25fb78ece2ed4a9b134b43
diff --git a/trunk/drivers/char/n_tty.c b/trunk/drivers/char/n_tty.c
index 46b2a1cc8b54..0c09409fa45d 100644
--- a/trunk/drivers/char/n_tty.c
+++ b/trunk/drivers/char/n_tty.c
@@ -1183,7 +1183,7 @@ static int copy_from_read_buf(struct tty_struct *tty,
 	return retval;
 }
 
-extern ssize_t redirected_tty_write(struct file *, const char *,
+extern ssize_t redirected_tty_write(struct file *, const char __user *,
 							size_t, loff_t *);
 
 /**