# CHANGE
                # lca->lca_en50221_thread_running = 0;
                # pthread_join(lca->lca_en50221_thread, NULL);
                # TO:
                if(lca->lca_en50221_thread_running == 1) {
                        lca->lca_en50221_thread_running = 0;
                        pthread_join(lca->lca_en50221_thread, NULL);
                }