226     if ( sc->aen_q.head == sc->aen_q.tail ) {  in tws_retrive_aen()
237     if ( sc->aen_q.overflow ) {  in tws_retrive_aen()
239         sc->aen_q.overflow = 0; /* reset */  in tws_retrive_aen()
242     qp = (struct tws_event_packet *)sc->aen_q.q;  in tws_retrive_aen()
246             index = sc->aen_q.head;  in tws_retrive_aen()
250             index = (sc->aen_q.depth + sc->aen_q.tail - 1) % sc->aen_q.depth;  in tws_retrive_aen()
254             index = sc->aen_q.head;  in tws_retrive_aen()
259                 index  = (index+1) % sc->aen_q.depth;  in tws_retrive_aen()
260             }while ( index != sc->aen_q.tail );  in tws_retrive_aen()
261             if ( index == sc->aen_q.tail ) {  in tws_retrive_aen()
268             index = sc->aen_q.head;  in tws_retrive_aen()
273                 index  = (index+1) % sc->aen_q.depth;  in tws_retrive_aen()
274             }while ( index != sc->aen_q.tail );  in tws_retrive_aen()
275             if ( index == sc->aen_q.tail ) {  in tws_retrive_aen()