static int da9052_led_probe()

in leds-da9052.c [89:157]

• 60 lines of code
• 9 McCabe index (conditional complexity)

static int da9052_led_probe(struct platform_device *pdev)
{
	struct da9052_pdata *pdata;
	struct da9052 *da9052;
	struct led_platform_data *pled;
	struct da9052_led *led = NULL;
	int error = -ENODEV;
	int i;

	da9052 = dev_get_drvdata(pdev->dev.parent);
	pdata = dev_get_platdata(da9052->dev);
	if (pdata == NULL) {
		dev_err(&pdev->dev, "No platform data\n");
		goto err;
	}

	pled = pdata->pled;
	if (pled == NULL) {
		dev_err(&pdev->dev, "No platform data for LED\n");
		goto err;
	}

	led = devm_kcalloc(&pdev->dev,
			   pled->num_leds, sizeof(struct da9052_led),
			   GFP_KERNEL);
	if (!led) {
		error = -ENOMEM;
		goto err;
	}

	for (i = 0; i < pled->num_leds; i++) {
		led[i].cdev.name = pled->leds[i].name;
		led[i].cdev.brightness_set_blocking = da9052_led_set;
		led[i].cdev.brightness = LED_OFF;
		led[i].cdev.max_brightness = DA9052_MAX_BRIGHTNESS;
		led[i].led_index = pled->leds[i].flags;
		led[i].da9052 = dev_get_drvdata(pdev->dev.parent);

		error = led_classdev_register(pdev->dev.parent, &led[i].cdev);
		if (error) {
			dev_err(&pdev->dev, "Failed to register led %d\n",
				led[i].led_index);
			goto err_register;
		}

		error = da9052_set_led_brightness(&led[i],
						  led[i].cdev.brightness);
		if (error) {
			dev_err(&pdev->dev, "Unable to init led %d\n",
				led[i].led_index);
			continue;
		}
	}
	error = da9052_configure_leds(led->da9052);
	if (error) {
		dev_err(&pdev->dev, "Failed to configure GPIO LED%d\n", error);
		goto err_register;
	}

	platform_set_drvdata(pdev, led);

	return 0;

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