ahci_do_reset_drive
error = ahci_do_reset_drive(chp, PMP_PORT_CTL, AT_WAIT,
ahci_do_reset_drive(chp, 0, AT_WAIT, &sig, c_slot);
static int ahci_do_reset_drive(struct ata_channel *, int, int, uint32_t *,
ahci_do_reset_drive(chp, drvp->drive, flags, sigp, c_slot);