return intf;
 }
 
-int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id)
+static int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id)
 {
        struct gb_svc_intf_device_id_request request;
 
        return gb_operation_sync(svc->connection, GB_SVC_TYPE_INTF_DEVICE_ID,
                                 &request, sizeof(request), NULL, 0);
 }
-EXPORT_SYMBOL_GPL(gb_svc_intf_device_id);
 
 int gb_svc_intf_reset(struct gb_svc *svc, u8 intf_id)
 {
 }
 EXPORT_SYMBOL_GPL(gb_svc_connection_destroy);
 
-int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id,
-                       u8 intf2_id, u8 dev2_id)
+static int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id,
+                              u8 intf2_id, u8 dev2_id)
 {
        struct gb_svc_route_create_request request;
 
        return gb_operation_sync(svc->connection, GB_SVC_TYPE_ROUTE_CREATE,
                                 &request, sizeof(request), NULL, 0);
 }
-EXPORT_SYMBOL_GPL(gb_svc_route_create);
 
 static int gb_svc_version_request(struct gb_operation *op)
 {
 
 
 struct gb_svc;
 
-int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id);
 int gb_svc_intf_reset(struct gb_svc *svc, u8 intf_id);
 int gb_svc_connection_create(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
                                                u8 intf2_id, u16 cport2_id);