diff --git a/include/linux/tty.h b/include/linux/tty.h
index d96e588..568369a 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -514,6 +514,7 @@
 
 /* n_tty.c */
 extern struct tty_ldisc_ops tty_ldisc_N_TTY;
+extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
 
 /* tty_audit.c */
 #ifdef CONFIG_AUDIT