static int adc_jack_probe()

in extcon-adc-jack.c [95:159]

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

static int adc_jack_probe(struct platform_device *pdev)
{
	struct adc_jack_data *data;
	struct adc_jack_pdata *pdata = dev_get_platdata(&pdev->dev);
	int i, err = 0;

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

	if (!pdata->cable_names) {
		dev_err(&pdev->dev, "error: cable_names not defined.\n");
		return -EINVAL;
	}

	data->dev = &pdev->dev;
	data->edev = devm_extcon_dev_allocate(&pdev->dev, pdata->cable_names);
	if (IS_ERR(data->edev)) {
		dev_err(&pdev->dev, "failed to allocate extcon device\n");
		return -ENOMEM;
	}

	if (!pdata->adc_conditions) {
		dev_err(&pdev->dev, "error: adc_conditions not defined.\n");
		return -EINVAL;
	}
	data->adc_conditions = pdata->adc_conditions;

	/* Check the length of array and set num_conditions */
	for (i = 0; data->adc_conditions[i].id != EXTCON_NONE; i++);
	data->num_conditions = i;

	data->chan = devm_iio_channel_get(&pdev->dev, pdata->consumer_channel);
	if (IS_ERR(data->chan))
		return PTR_ERR(data->chan);

	data->handling_delay = msecs_to_jiffies(pdata->handling_delay_ms);
	data->wakeup_source = pdata->wakeup_source;

	INIT_DEFERRABLE_WORK(&data->handler, adc_jack_handler);

	platform_set_drvdata(pdev, data);

	err = devm_extcon_dev_register(&pdev->dev, data->edev);
	if (err)
		return err;

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

	err = request_any_context_irq(data->irq, adc_jack_irq_thread,
			pdata->irq_flags, pdata->name, data);

	if (err < 0) {
		dev_err(&pdev->dev, "error: irq %d\n", data->irq);
		return err;
	}

	if (data->wakeup_source)
		device_init_wakeup(&pdev->dev, 1);

	adc_jack_handler(&data->handler.work);
	return 0;
}