ata_class_enabled
if (ata_class_enabled(new_class) && new_class == ATA_DEV_PMP) {
if (ata_class_enabled(classes[dev->devno]))
ata_class_enabled(ehc->classes[dev->devno])) {
if (ata_class_enabled(new_class) && new_class != ATA_DEV_PMP) {
return !ata_class_enabled(class) && !ata_class_disabled(class);
return ata_class_enabled(dev->class);