SCSIPI_CHAN_TACTIVE
(chan->chan_flags & SCSIPI_CHAN_TACTIVE) == 0) {
chan->chan_flags |= SCSIPI_CHAN_TACTIVE;
if ((chan->chan_flags & SCSIPI_CHAN_TACTIVE) == 0) {
if ((chan->chan_flags & SCSIPI_CHAN_TACTIVE) == 0) {
if ((periph->periph_channel->chan_flags & SCSIPI_CHAN_TACTIVE) == 0) {