static int imx_icc_node_init_qos()

in imx/imx.c [78:121]

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

static int imx_icc_node_init_qos(struct icc_provider *provider,
				 struct icc_node *node)
{
	struct imx_icc_node *node_data = node->data;
	const struct imx_icc_node_adj_desc *adj = node_data->desc->adj;
	struct device *dev = provider->dev;
	struct device_node *dn = NULL;
	struct platform_device *pdev;

	if (adj->main_noc) {
		node_data->qos_dev = dev;
		dev_dbg(dev, "icc node %s[%d] is main noc itself\n",
			node->name, node->id);
	} else {
		dn = of_parse_phandle(dev->of_node, adj->phandle_name, 0);
		if (!dn) {
			dev_warn(dev, "Failed to parse %s\n",
				 adj->phandle_name);
			return -ENODEV;
		}
		/* Allow scaling to be disabled on a per-node basis */
		if (!of_device_is_available(dn)) {
			dev_warn(dev, "Missing property %s, skip scaling %s\n",
				 adj->phandle_name, node->name);
			of_node_put(dn);
			return 0;
		}

		pdev = of_find_device_by_node(dn);
		of_node_put(dn);
		if (!pdev) {
			dev_warn(dev, "node %s[%d] missing device for %pOF\n",
				 node->name, node->id, dn);
			return -EPROBE_DEFER;
		}
		node_data->qos_dev = &pdev->dev;
		dev_dbg(dev, "node %s[%d] has device node %pOF\n",
			node->name, node->id, dn);
	}

	return dev_pm_qos_add_request(node_data->qos_dev,
				      &node_data->qos_req,
				      DEV_PM_QOS_MIN_FREQUENCY, 0);
}