def aer_rootport_counts()

in pci_lib/pci_lib.py [0:0]

• 17 lines of code
• 6 McCabe index (conditional complexity)

def aer_rootport_counts(device_name, count_names):
    """Gather PCIe root port device AER error counts, when available."""
    rootport_counts = {}
    device_name = expand_pci_addr(device_name)
    if not device_name:
        return None
    for count_name in count_names:
        filename = os.path.join(SYSFS_PCI_BUS_DEVICES, device_name, count_name)
        if not os.path.isfile(filename):
            continue
        with open(filename) as file_obj:
            # For AER root port counts we expect a single line with
            # the integer error count that is associated with the
            # specific count_name.  We'll use the count_name for the
            # value's key.
            try:
                rootport_counts[count_name] = int(file_obj.readline())
            except ValueError:
                pass

    if len(rootport_counts) == 0:
        return None

    return rootport_counts