diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index bf6e238146ae40acd4ac8ea2f517574870366590..1ac8abf4708dd1ee94b1209a5672c49e8cc8d8ef 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -413,6 +413,14 @@ void tty_port_close(struct tty_port *port, struct tty_struct *tty,
 }
 EXPORT_SYMBOL(tty_port_close);
 
+int tty_port_install(struct tty_port *port, struct tty_driver *driver,
+		struct tty_struct *tty)
+{
+	tty->port = port;
+	return tty_standard_install(driver, tty);
+}
+EXPORT_SYMBOL_GPL(tty_port_install);
+
 int tty_port_open(struct tty_port *port, struct tty_struct *tty,
 							struct file *filp)
 {
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 9f47ab540f65e997b79b0a16c52332c564354234..45ef71df0e72881d64c00d52938f589e0cbe379f 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -521,6 +521,8 @@ extern int tty_port_close_start(struct tty_port *port,
 extern void tty_port_close_end(struct tty_port *port, struct tty_struct *tty);
 extern void tty_port_close(struct tty_port *port,
 				struct tty_struct *tty, struct file *filp);
+extern int tty_port_install(struct tty_port *port, struct tty_driver *driver,
+				struct tty_struct *tty);
 extern int tty_port_open(struct tty_port *port,
 				struct tty_struct *tty, struct file *filp);
 static inline int tty_port_users(struct tty_port *port)