static int qcom_usb_extcon_probe()

in extcon-qcom-spmi-misc.c [87:164]

• 65 lines of code
• 11 McCabe index (conditional complexity)

static int qcom_usb_extcon_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct qcom_usb_extcon_info *info;
	int ret;

	info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	info->edev = devm_extcon_dev_allocate(dev, qcom_usb_extcon_cable);
	if (IS_ERR(info->edev)) {
		dev_err(dev, "failed to allocate extcon device\n");
		return -ENOMEM;
	}

	ret = devm_extcon_dev_register(dev, info->edev);
	if (ret < 0) {
		dev_err(dev, "failed to register extcon device\n");
		return ret;
	}

	ret = extcon_set_property_capability(info->edev,
			EXTCON_USB, EXTCON_PROP_USB_SS);
	ret |= extcon_set_property_capability(info->edev,
			EXTCON_USB_HOST, EXTCON_PROP_USB_SS);
	if (ret) {
		dev_err(dev, "failed to register extcon props rc=%d\n",
						ret);
		return ret;
	}

	info->debounce_jiffies = msecs_to_jiffies(USB_ID_DEBOUNCE_MS);

	ret = devm_delayed_work_autocancel(dev, &info->wq_detcable,
					   qcom_usb_extcon_detect_cable);
	if (ret)
		return ret;

	info->id_irq = platform_get_irq_byname(pdev, "usb_id");
	if (info->id_irq > 0) {
		ret = devm_request_threaded_irq(dev, info->id_irq, NULL,
					qcom_usb_irq_handler,
					IRQF_TRIGGER_RISING |
					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
					pdev->name, info);
		if (ret < 0) {
			dev_err(dev, "failed to request handler for ID IRQ\n");
			return ret;
		}
	}

	info->vbus_irq = platform_get_irq_byname(pdev, "usb_vbus");
	if (info->vbus_irq > 0) {
		ret = devm_request_threaded_irq(dev, info->vbus_irq, NULL,
					qcom_usb_irq_handler,
					IRQF_TRIGGER_RISING |
					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
					pdev->name, info);
		if (ret < 0) {
			dev_err(dev, "failed to request handler for VBUS IRQ\n");
			return ret;
		}
	}

	if (info->id_irq < 0 && info->vbus_irq < 0) {
		dev_err(dev, "ID and VBUS IRQ not found\n");
		return -EINVAL;
	}

	platform_set_drvdata(pdev, info);
	device_init_wakeup(dev, 1);

	/* Perform initial detection */
	qcom_usb_extcon_detect_cable(&info->wq_detcable.work);

	return 0;
}