__mock int match_add_root_ports()

in acpi.c [135:167]

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

__mock int match_add_root_ports(struct pci_dev *pdev, void *data)
{
	struct cxl_walk_context *ctx = data;
	struct pci_bus *root_bus = ctx->root;
	struct cxl_port *port = ctx->port;
	int type = pci_pcie_type(pdev);
	struct device *dev = ctx->dev;
	u32 lnkcap, port_num;
	int rc;

	if (pdev->bus != root_bus)
		return 0;
	if (!pci_is_pcie(pdev))
		return 0;
	if (type != PCI_EXP_TYPE_ROOT_PORT)
		return 0;
	if (pci_read_config_dword(pdev, pci_pcie_cap(pdev) + PCI_EXP_LNKCAP,
				  &lnkcap) != PCIBIOS_SUCCESSFUL)
		return 0;

	/* TODO walk DVSEC to find component register base */
	port_num = FIELD_GET(PCI_EXP_LNKCAP_PN, lnkcap);
	rc = cxl_add_dport(port, &pdev->dev, port_num, CXL_RESOURCE_NONE);
	if (rc) {
		ctx->error = rc;
		return rc;
	}
	ctx->count++;

	dev_dbg(dev, "add dport%d: %s\n", port_num, dev_name(&pdev->dev));

	return 0;
}