static int exynos_generic_icc_probe()

in samsung/exynos.c [111:183]

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

static int exynos_generic_icc_probe(struct platform_device *pdev)
{
	struct device *bus_dev = pdev->dev.parent;
	struct exynos_icc_priv *priv;
	struct icc_provider *provider;
	struct icc_node *icc_node, *icc_parent_node;
	int ret;

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

	priv->dev = &pdev->dev;
	platform_set_drvdata(pdev, priv);

	provider = &priv->provider;

	provider->set = exynos_generic_icc_set;
	provider->aggregate = icc_std_aggregate;
	provider->xlate = exynos_generic_icc_xlate;
	provider->dev = bus_dev;
	provider->inter_set = true;
	provider->data = priv;

	ret = icc_provider_add(provider);
	if (ret < 0)
		return ret;

	icc_node = icc_node_create(pdev->id);
	if (IS_ERR(icc_node)) {
		ret = PTR_ERR(icc_node);
		goto err_prov_del;
	}

	priv->node = icc_node;
	icc_node->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%pOFn",
					bus_dev->of_node);
	if (of_property_read_u32(bus_dev->of_node, "samsung,data-clock-ratio",
				 &priv->bus_clk_ratio))
		priv->bus_clk_ratio = EXYNOS_ICC_DEFAULT_BUS_CLK_RATIO;

	/*
	 * Register a PM QoS request for the parent (devfreq) device.
	 */
	ret = dev_pm_qos_add_request(bus_dev, &priv->qos_req,
				     DEV_PM_QOS_MIN_FREQUENCY, 0);
	if (ret < 0)
		goto err_node_del;

	icc_node->data = priv;
	icc_node_add(icc_node, provider);

	icc_parent_node = exynos_icc_get_parent(bus_dev->of_node);
	if (IS_ERR(icc_parent_node)) {
		ret = PTR_ERR(icc_parent_node);
		goto err_pmqos_del;
	}
	if (icc_parent_node) {
		ret = icc_link_create(icc_node, icc_parent_node->id);
		if (ret < 0)
			goto err_pmqos_del;
	}

	return 0;

err_pmqos_del:
	dev_pm_qos_remove_request(&priv->qos_req);
err_node_del:
	icc_nodes_remove(provider);
err_prov_del:
	icc_provider_del(provider);
	return ret;
}