}
 
 struct vchiq_service *
-find_service_by_port(struct vchiq_state *state, int localport)
+find_service_by_port(struct vchiq_state *state, unsigned int localport)
 {
-       if ((unsigned int)localport <= VCHIQ_PORT_MAX) {
+       if (localport <= VCHIQ_PORT_MAX) {
                struct vchiq_service *service;
 
                rcu_read_lock();
                rcu_read_unlock();
        }
        vchiq_log_info(vchiq_core_log_level,
-                      "Invalid port %d", localport);
+                      "Invalid port %u", localport);
        return NULL;
 }
 
 
 find_service_by_handle(unsigned int handle);
 
 extern struct vchiq_service *
-find_service_by_port(struct vchiq_state *state, int localport);
+find_service_by_port(struct vchiq_state *state, unsigned int localport);
 
 extern struct vchiq_service *
 find_service_for_instance(struct vchiq_instance *instance, unsigned int handle);