--- zzzz-none-000/linux-3.10.107/include/linux/serio.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/serio.h	2021-02-04 17:41:59.000000000 +0000
@@ -18,11 +18,14 @@
 #include <linux/mod_devicetable.h>
 #include <uapi/linux/serio.h>
 
+extern struct bus_type serio_bus;
+
 struct serio {
 	void *port_data;
 
 	char name[32];
 	char phys[32];
+	char firmware_id[128];
 
 	bool manual_bind;