2 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/tty.h b/include/linux/tty.h
index e00393a3d1c9..6e39c705b9b6 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -354,7 +354,8 @@ extern void tty_throttle(struct tty_struct *tty);
 extern void tty_unthrottle(struct tty_struct *tty);
 extern int tty_do_resize(struct tty_struct *tty, struct tty_struct *real_tty,
                                                 struct winsize *ws);
-
+extern void tty_shutdown(struct tty_struct *tty);
+extern void tty_free_termios(struct tty_struct *tty);
 extern int is_current_pgrp_orphaned(void);
 extern struct pid *tty_get_pgrp(struct tty_struct *tty);
 extern int is_ignored(int sig);
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index ac6e58e26b73..2322313a8589 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -21,6 +21,11 @@
  *
  *      Required method.
  *
+ * void (*shutdown)(struct tty_struct * tty);
+ *
+ *      This routine is called when a particular tty device is closed for
+ *      the last time freeing up the resources.
+ *
  * int (*write)(struct tty_struct * tty,
  *               const unsigned char *buf, int count);
  *
@@ -200,6 +205,7 @@ struct tty_driver;
 struct tty_operations {
         int  (*open)(struct tty_struct * tty, struct file * filp);
         void (*close)(struct tty_struct * tty, struct file * filp);
+        void (*shutdown)(struct tty_struct *tty);
         int  (*write)(struct tty_struct * tty,
                       const unsigned char *buf, int count);
         int  (*put_char)(struct tty_struct *tty, unsigned char ch);