KCS_STATUS_OBF
if (status & KCS_STATUS_OBF) {
if (status & KCS_STATUS_OBF) {
if (status & KCS_STATUS_OBF ||
for (i = 0; i < timeout_usecs && status & KCS_STATUS_OBF;
for (i = 0; i < timeout_usecs && !(status & KCS_STATUS_OBF);