static int exynos_nocp_probe()

in event/exynos-nocp.c [234:277]

• 35 lines of code
• 5 McCabe index (conditional complexity)

static int exynos_nocp_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct device_node *np = dev->of_node;
	struct exynos_nocp *nocp;
	int ret;

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

	nocp->dev = &pdev->dev;

	/* Parse dt data to get resource */
	ret = exynos_nocp_parse_dt(pdev, nocp);
	if (ret < 0) {
		dev_err(&pdev->dev,
			"failed to parse devicetree for resource\n");
		return ret;
	}

	/* Add devfreq-event device to measure the bandwidth of NoC */
	nocp->desc.ops = &exynos_nocp_ops;
	nocp->desc.driver_data = nocp;
	nocp->desc.name = np->full_name;
	nocp->edev = devm_devfreq_event_add_edev(&pdev->dev, &nocp->desc);
	if (IS_ERR(nocp->edev)) {
		dev_err(&pdev->dev,
			"failed to add devfreq-event device\n");
		return PTR_ERR(nocp->edev);
	}
	platform_set_drvdata(pdev, nocp);

	ret = clk_prepare_enable(nocp->clk);
	if (ret) {
		dev_err(&pdev->dev, "failed to prepare ppmu clock\n");
		return ret;
	}

	pr_info("exynos-nocp: new NoC Probe device registered: %s\n",
			dev_name(dev));

	return 0;
}