--- zzzz-none-000/linux-3.10.107/net/wireless/sysfs.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/wireless/sysfs.h	2021-02-04 17:41:59.000000000 +0000
@@ -1,8 +1,8 @@
 #ifndef __WIRELESS_SYSFS_H
 #define __WIRELESS_SYSFS_H
 
-extern int wiphy_sysfs_init(void);
-extern void wiphy_sysfs_exit(void);
+int wiphy_sysfs_init(void);
+void wiphy_sysfs_exit(void);
 
 extern struct class ieee80211_class;