spin_unlock_irq(&ap->host_set->lock);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
void ata_poll_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat){	struct ata_port *ap = qc->ap;	spin_lock_irq(&ap->host_set->lock);	ap->flags &= ~ATA_FLAG_NOINTR;	ata_irq_on(ap);	ata_qc_complete(qc, drv_stat);	spin_unlock_irq(&ap->host_set->lock);}