assert(u->source || u->sink);
- u->io = pa_iochannel_new(c->mainloop, u->source ? fd : -1, u->sink ? fd : 0);
+ u->io = pa_iochannel_new(c->mainloop, u->source ? fd : -1, u->sink ? fd : -1);
assert(u->io);
pa_iochannel_set_callback(u->io, io_callback, u);
u->fd = fd;