diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h
index d961635..0d034d8 100644
--- a/include/linux/vt_kern.h
+++ b/include/linux/vt_kern.h
@@ -75,6 +75,10 @@
 int vt_waitactive(int vt);
 void change_console(struct vc_data *new_vc);
 void reset_vc(struct vc_data *vc);
+extern int bind_con_driver(const struct consw *csw, int first, int last,
+			   int deflt);
+extern int unbind_con_driver(const struct consw *csw, int first, int last,
+			     int deflt);
 
 /*
  * vc_screen.c shares this temporary buffer with the console write code so that