diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 16d2794..ac6e58e 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -180,6 +180,14 @@
  *	not force errors here if they are not resizable objects (eg a serial
  *	line). See tty_do_resize() if you need to wrap the standard method
  *	in your own logic - the usual case.
+ *
+ * void (*set_termiox)(struct tty_struct *tty, struct termiox *new);
+ *
+ *	Called when the device receives a termiox based ioctl. Passes down
+ *	the requested data from user space. This method will not be invoked
+ *	unless the tty also has a valid tty->termiox pointer.
+ *
+ *	Optional: Called under the termios lock
  */
 
 #include <linux/fs.h>
@@ -220,6 +228,7 @@
 			unsigned int set, unsigned int clear);
 	int (*resize)(struct tty_struct *tty, struct tty_struct *real_tty,
 				struct winsize *ws);
+	int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew);
 #ifdef CONFIG_CONSOLE_POLL
 	int (*poll_init)(struct tty_driver *driver, int line, char *options);
 	int (*poll_get_char)(struct tty_driver *driver, int line);