static int adp5520_led_probe()

in leds-adp5520.c [92:164]

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

static int adp5520_led_probe(struct platform_device *pdev)
{
	struct adp5520_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
	struct adp5520_led *led, *led_dat;
	struct led_info *cur_led;
	int ret, i;

	if (pdata == NULL) {
		dev_err(&pdev->dev, "missing platform data\n");
		return -ENODEV;
	}

	if (pdata->num_leds > ADP5520_01_MAXLEDS) {
		dev_err(&pdev->dev, "can't handle more than %d LEDS\n",
				 ADP5520_01_MAXLEDS);
		return -EFAULT;
	}

	led = devm_kcalloc(&pdev->dev, pdata->num_leds, sizeof(*led),
				GFP_KERNEL);
	if (!led)
		return -ENOMEM;

	ret = adp5520_led_prepare(pdev);
	if (ret) {
		dev_err(&pdev->dev, "failed to write\n");
		return ret;
	}

	for (i = 0; i < pdata->num_leds; ++i) {
		cur_led = &pdata->leds[i];
		led_dat = &led[i];

		led_dat->cdev.name = cur_led->name;
		led_dat->cdev.default_trigger = cur_led->default_trigger;
		led_dat->cdev.brightness_set_blocking = adp5520_led_set;
		led_dat->cdev.brightness = LED_OFF;

		if (cur_led->flags & ADP5520_FLAG_LED_MASK)
			led_dat->flags = cur_led->flags;
		else
			led_dat->flags = i + 1;

		led_dat->id = led_dat->flags & ADP5520_FLAG_LED_MASK;

		led_dat->master = pdev->dev.parent;

		ret = led_classdev_register(led_dat->master, &led_dat->cdev);
		if (ret) {
			dev_err(&pdev->dev, "failed to register LED %d\n",
				led_dat->id);
			goto err;
		}

		ret = adp5520_led_setup(led_dat);
		if (ret) {
			dev_err(&pdev->dev, "failed to write\n");
			i++;
			goto err;
		}
	}

	platform_set_drvdata(pdev, led);
	return 0;

err:
	if (i > 0) {
		for (i = i - 1; i >= 0; i--)
			led_classdev_unregister(&led[i].cdev);
	}

	return ret;
}