ACPI_BAR
err = pci_request_region(pdev, ACPI_BAR, DRV_NAME);
pci_release_region(pdev, ACPI_BAR);
pci_release_region(pdev, ACPI_BAR);
.resources = &cs5535_mfd_resources[ACPI_BAR],
.resources = &cs5535_mfd_resources[ACPI_BAR],