XENSND_OP_CLOSE 123 sound/xen/xen_snd_front.c req = be_stream_prepare_req(evtchnl, XENSND_OP_CLOSE); XENSND_OP_CLOSE 50 sound/xen/xen_snd_front_evtchnl.c case XENSND_OP_CLOSE: