ATA_PROT_FLAG_PIO 153 include/linux/libata.h ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, ATA_PROT_FLAG_PIO 1024 include/linux/libata.h return ATA_PROT_FLAG_PIO; ATA_PROT_FLAG_PIO 1032 include/linux/libata.h return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; ATA_PROT_FLAG_PIO 1051 include/linux/libata.h return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;