ATA_STALL_QUEUE
ch->state |= ATA_STALL_QUEUE;
ch->state |= ATA_STALL_QUEUE;
(ch->state & ATA_STALL_QUEUE) || (request->flags & ATA_R_DIRECT)) {
if ((ch->state & ATA_STALL_QUEUE) && (request->flags & ATA_R_CONTROL)) {