snd_emux_event_input
return snd_emux_event_input(ev, direct, private_data, atomic, hop);
snd_emux_event_input(&ev, 0, port, atomic, hop);
pinfo.event_input = snd_emux_event_input;
int snd_emux_event_input(struct snd_seq_event *ev, int direct, void *private,