def METHOD_NAME(pf_info, driver):
    """
    Get id of PFs
    :param pf_info: Dict, pfs' info
    :param driver: str, pfs' driver
    :return: List, pfs' id, eg. ['0000:05:00.0', '0000:05:00.1']
    """
    return [pf.get("pci_id") for pf in pf_info.values()
            if pf.get("driver") == driver]