ptf
rc = ptf(PTF_VERTICAL);
rc = ptf(PTF_HORIZONTAL);
if (ptf(PTF_CHECK))
const struct ata_taskfile *ptf)
if ((!ptf || ptf->command != ATA_CMD_READ_NATIVE_MAX) &&
struct ata_taskfile tf, ptf, rtf;
ata_acpi_gtf_to_tf(dev, prev_gtf, &ptf);
pptf = &ptf;