static int pm860x_led_probe()

in leds-88pm860x.c [144:216]

• 68 lines of code
• 14 McCabe index (conditional complexity)

static int pm860x_led_probe(struct platform_device *pdev)
{
	struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
	struct pm860x_led_pdata *pdata = dev_get_platdata(&pdev->dev);
	struct pm860x_led *data;
	struct resource *res;
	int ret = 0;

	data = devm_kzalloc(&pdev->dev, sizeof(struct pm860x_led), GFP_KERNEL);
	if (data == NULL)
		return -ENOMEM;
	res = platform_get_resource_byname(pdev, IORESOURCE_REG, "control");
	if (!res) {
		dev_err(&pdev->dev, "No REG resource for control\n");
		return -ENXIO;
	}
	data->reg_control = res->start;
	res = platform_get_resource_byname(pdev, IORESOURCE_REG, "blink");
	if (!res) {
		dev_err(&pdev->dev, "No REG resource for blink\n");
		return -ENXIO;
	}
	data->reg_blink = res->start;
	memset(data->name, 0, MFD_NAME_SIZE);
	switch (pdev->id) {
	case 0:
		data->blink_mask = LED1_BLINK_EN;
		sprintf(data->name, "led0-red");
		break;
	case 1:
		data->blink_mask = LED1_BLINK_EN;
		sprintf(data->name, "led0-green");
		break;
	case 2:
		data->blink_mask = LED1_BLINK_EN;
		sprintf(data->name, "led0-blue");
		break;
	case 3:
		data->blink_mask = LED2_BLINK_EN;
		sprintf(data->name, "led1-red");
		break;
	case 4:
		data->blink_mask = LED2_BLINK_EN;
		sprintf(data->name, "led1-green");
		break;
	case 5:
		data->blink_mask = LED2_BLINK_EN;
		sprintf(data->name, "led1-blue");
		break;
	}
	data->chip = chip;
	data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion;
	data->port = pdev->id;
	if (pm860x_led_dt_init(pdev, data))
		if (pdata)
			data->iset = pdata->iset;

	data->current_brightness = 0;
	data->cdev.name = data->name;
	data->cdev.brightness_set_blocking = pm860x_led_set;
	mutex_init(&data->lock);

	ret = led_classdev_register(chip->dev, &data->cdev);
	if (ret < 0) {
		dev_err(&pdev->dev, "Failed to register LED: %d\n", ret);
		return ret;
	}
	pm860x_led_set(&data->cdev, 0);

	platform_set_drvdata(pdev, data);

	return 0;
}