reg54h 275 drivers/ide/piix.c u8 reg54h = 0, mask = hwif->channel ? 0xc0 : 0x30; reg54h 287 drivers/ide/piix.c pci_read_config_byte(pdev, 0x54, ®54h); reg54h 289 drivers/ide/piix.c return (reg54h & mask) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;