vmbus_subchannel_get
subchans = vmbus_subchannel_get(sc->sc_prichan, subchan_cnt);
subchans = vmbus_subchannel_get(sc->sc_prichan, subchan_cnt);
subchans = vmbus_subchannel_get(sc->sc_prichan, *nsubch);
subchans = vmbus_subchannel_get(sc->sc_prichan, nsubch);
subch = vmbus_subchannel_get(ch, cnt);
vmbus_subchannel_get(struct vmbus_channel *, int);