CISS_REQ_SLEEP
if (cr->cr_flags & CISS_REQ_SLEEP) {
cr->cr_flags &= ~CISS_REQ_SLEEP;
cr->cr_flags |= CISS_REQ_SLEEP;
while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) {
if (cr->cr_flags & CISS_REQ_SLEEP) {
cr->cr_flags &= ~CISS_REQ_SLEEP;