static int qcom_ipcc_probe()

in qcom-ipcc.c [257:309]

• 41 lines of code
• 9 McCabe index (conditional complexity)

static int qcom_ipcc_probe(struct platform_device *pdev)
{
	struct qcom_ipcc *ipcc;
	static int id;
	char *name;
	int ret;

	ipcc = devm_kzalloc(&pdev->dev, sizeof(*ipcc), GFP_KERNEL);
	if (!ipcc)
		return -ENOMEM;

	ipcc->dev = &pdev->dev;

	ipcc->base = devm_platform_ioremap_resource(pdev, 0);
	if (IS_ERR(ipcc->base))
		return PTR_ERR(ipcc->base);

	ipcc->irq = platform_get_irq(pdev, 0);
	if (ipcc->irq < 0)
		return ipcc->irq;

	name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "ipcc_%d", id++);
	if (!name)
		return -ENOMEM;

	ipcc->irq_domain = irq_domain_add_tree(pdev->dev.of_node,
					       &qcom_ipcc_irq_ops, ipcc);
	if (!ipcc->irq_domain)
		return -ENOMEM;

	ret = qcom_ipcc_setup_mbox(ipcc, pdev->dev.of_node);
	if (ret)
		goto err_mbox;

	ret = devm_request_irq(&pdev->dev, ipcc->irq, qcom_ipcc_irq_fn,
			       IRQF_TRIGGER_HIGH | IRQF_NO_SUSPEND, name, ipcc);
	if (ret < 0) {
		dev_err(&pdev->dev, "Failed to register the irq: %d\n", ret);
		goto err_req_irq;
	}

	platform_set_drvdata(pdev, ipcc);

	return 0;

err_req_irq:
	if (ipcc->num_chans)
		mbox_controller_unregister(&ipcc->mbox);
err_mbox:
	irq_domain_remove(ipcc->irq_domain);

	return ret;
}