--- zzzz-none-000/linux-3.10.107/include/net/stp.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/net/stp.h	2021-02-04 17:41:59.000000000 +0000
@@ -8,7 +8,7 @@
 	void		*data;
 };
 
-extern int stp_proto_register(const struct stp_proto *proto);
-extern void stp_proto_unregister(const struct stp_proto *proto);
+int stp_proto_register(const struct stp_proto *proto);
+void stp_proto_unregister(const struct stp_proto *proto);
 
 #endif /* _NET_STP_H */