XENSND_OP_OPEN 96 sound/xen/xen_snd_front.c req = be_stream_prepare_req(evtchnl, XENSND_OP_OPEN); XENSND_OP_OPEN 48 sound/xen/xen_snd_front_evtchnl.c case XENSND_OP_OPEN: