--- zzzz-none-000/linux-3.10.107/include/linux/vt_kern.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/vt_kern.h	2021-02-04 17:41:59.000000000 +0000
@@ -133,8 +133,6 @@
 void reset_vc(struct vc_data *vc);
 extern int do_unbind_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);
 int vty_init(const struct file_operations *console_fops);
 
 static inline bool vt_force_oops_output(struct vc_data *vc)