static int intel_ntb_pci_probe()

in hw/intel/ntb_hw_gen1.c [1845:1915]

• 58 lines of code
• 15 McCabe index (conditional complexity)

static int intel_ntb_pci_probe(struct pci_dev *pdev,
			       const struct pci_device_id *id)
{
	struct intel_ntb_dev *ndev;
	int rc, node;

	node = dev_to_node(&pdev->dev);
	ndev = kzalloc_node(sizeof(*ndev), GFP_KERNEL, node);
	if (!ndev) {
		rc = -ENOMEM;
		goto err_ndev;
	}

	ndev_init_struct(ndev, pdev);

	if (pdev_is_gen1(pdev)) {
		rc = intel_ntb_init_pci(ndev, pdev);
		if (rc)
			goto err_init_pci;

		rc = xeon_init_dev(ndev);
		if (rc)
			goto err_init_dev;
	} else if (pdev_is_gen3(pdev)) {
		ndev->ntb.ops = &intel_ntb3_ops;
		rc = intel_ntb_init_pci(ndev, pdev);
		if (rc)
			goto err_init_pci;

		rc = gen3_init_dev(ndev);
		if (rc)
			goto err_init_dev;
	} else if (pdev_is_gen4(pdev)) {
		ndev->ntb.ops = &intel_ntb4_ops;
		rc = intel_ntb_init_pci(ndev, pdev);
		if (rc)
			goto err_init_pci;

		rc = gen4_init_dev(ndev);
		if (rc)
			goto err_init_dev;
	} else {
		rc = -EINVAL;
		goto err_init_pci;
	}

	ndev_reset_unsafe_flags(ndev);

	ndev->reg->poll_link(ndev);

	ndev_init_debugfs(ndev);

	rc = ntb_register_device(&ndev->ntb);
	if (rc)
		goto err_register;

	dev_info(&pdev->dev, "NTB device registered.\n");

	return 0;

err_register:
	ndev_deinit_debugfs(ndev);
	if (pdev_is_gen1(pdev) || pdev_is_gen3(pdev) || pdev_is_gen4(pdev))
		xeon_deinit_dev(ndev);
err_init_dev:
	intel_ntb_deinit_pci(ndev);
err_init_pci:
	kfree(ndev);
err_ndev:
	return rc;
}