qc->sg = NULL; 
qc->__sg = NULL; 
struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,				      struct ata_device *dev){	struct ata_queued_cmd *qc;	qc = ata_qc_new(ap);	if (qc) {		qc->sg = NULL;		qc->flags = 0;		qc->scsicmd = NULL;		qc->ap = ap;		qc->dev = dev;		qc->cursect = qc->cursg = qc->cursg_ofs = 0;		qc->nsect = 0;		qc->nbytes = qc->curbytes = 0;		ata_tf_init(ap, &qc->tf, dev->devno);		if (dev->flags & ATA_DFLAG_LBA48)			qc->tf.flags |= ATA_TFLAG_LBA48;	}	return qc;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/cedc9a478d8c6265879dc3839ef3d4849a709184/libata-core.c/clean/drivers/scsi/libata-core.c