1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/tty.h b/include/linux/tty.h
index 2699298b00ef..c36a76da2ae2 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -177,9 +177,13 @@ struct signal_struct;
  * size each time the window is created or resized anyway.
  *                                              - TYT, 9/14/92
  */
+
+struct tty_operations;
+
 struct tty_struct {
         int     magic;
         struct tty_driver *driver;
+        const struct tty_operations *ops;
         int index;
         struct tty_ldisc ldisc;
         struct mutex termios_mutex;
@@ -295,6 +299,10 @@ extern void tty_unregister_device(struct tty_driver *driver, unsigned index);
 extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp,
                              int buflen);
 extern void tty_write_message(struct tty_struct *tty, char *msg);
+extern int tty_put_char(struct tty_struct *tty, unsigned char c);
+extern int tty_chars_in_buffer(struct tty_struct *tty);
+extern int tty_write_room(struct tty_struct *tty);
+extern void tty_driver_flush_buffer(struct tty_struct *tty);
 
 extern int is_current_pgrp_orphaned(void);
 extern struct pid *tty_get_pgrp(struct tty_struct *tty);