ESC_NF_UNIT_BUSY
nexus->flags &= ~ESC_NF_UNIT_BUSY;
nexus->flags &= ~ESC_NF_UNIT_BUSY;
nexus->flags &= ~ESC_NF_UNIT_BUSY;
(dev->sc_nexus[target].flags & ESC_NF_UNIT_BUSY)) {
while(nexus->flags & ESC_NF_UNIT_BUSY) {
nexus->flags |= ESC_NF_UNIT_BUSY;
nexus->flags &= ~ESC_NF_UNIT_BUSY;
ESC_NF_UNIT_BUSY))
if (nexus->flags & ESC_NF_UNIT_BUSY)
nexus->flags |= ESC_NF_UNIT_BUSY;
nexus->flags &= ESC_NF_UNIT_BUSY