1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index ee80dfbd5442..687250ec8032 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -1373,7 +1373,13 @@ err_release_lock:
         return ERR_PTR(retval);
 }
 
-static void tty_free_termios(struct tty_struct *tty)
+/**
+ * tty_save_termios() - save tty termios data in driver table
+ * @tty: tty whose termios data to save
+ *
+ * Locking: Caller guarantees serialisation with tty_init_termios().
+ */
+void tty_save_termios(struct tty_struct *tty)
 {
         struct ktermios *tp;
         int idx = tty->index;
@@ -1392,6 +1398,7 @@ static void tty_free_termios(struct tty_struct *tty)
         }
         *tp = tty->termios;
 }
+EXPORT_SYMBOL_GPL(tty_save_termios);
 
 /**
  *      tty_flush_works         -       flush all works of a tty/pty pair
@@ -1491,7 +1498,7 @@ static void release_tty(struct tty_struct *tty, int idx)
         WARN_ON(!mutex_is_locked(&tty_mutex));
         if (tty->ops->shutdown)
                 tty->ops->shutdown(tty);
-        tty_free_termios(tty);
+        tty_save_termios(tty);
         tty_driver_remove_tty(tty->driver, tty);
         tty->port->itty = NULL;
         if (tty->link)