SG_DXFER_NONE     619 block/scsi_ioctl.c 					hdr.dxfer_direction = SG_DXFER_NONE;
SG_DXFER_NONE     680 drivers/scsi/sg.c 		hp->dxfer_direction = (mxsize > 0) ? SG_DXFER_FROM_DEV : SG_DXFER_NONE;
SG_DXFER_NONE    1757 drivers/scsi/sg.c 	if ((dxfer_len <= 0) || (dxfer_dir == SG_DXFER_NONE))