SSTS_DREG_EMPTY
while (hd->scsi_ssts & SSTS_DREG_EMPTY) {
while (! (hd->scsi_ssts & SSTS_DREG_EMPTY)) {
!(hd->scsi_ssts & SSTS_DREG_EMPTY))
!(hd->scsi_ssts & SSTS_DREG_EMPTY))
!(hd->scsi_ssts & SSTS_DREG_EMPTY)) {
while (hd->scsi_ssts & SSTS_DREG_EMPTY) {
SSTS_DREG_EMPTY) != 0)
SSTS_DREG_EMPTY) != 0)
} else if ((sstat & SSTS_DREG_EMPTY) == 0) {
if ((sstat & SSTS_DREG_EMPTY) == 0) {
SSTS_DREG_EMPTY) == 0)