ATA_MAX_PRD        42 include/linux/ata.h ATA_MAX_PRD		= 256,	/* we could make these 256/256 */
ATA_MAX_PRD       136 include/linux/ata.h ATA_PRD_TBL_SZ		= (ATA_MAX_PRD * ATA_PRD_SZ),
ATA_MAX_PRD       113 include/linux/libata.h LIBATA_MAX_PRD		= ATA_MAX_PRD / 2,
ATA_MAX_PRD       114 include/linux/libata.h LIBATA_DUMB_MAX_PRD	= ATA_MAX_PRD / 4,	/* Worst case */