Hi Jacek,
On Fri, Mar 20, 2015 at 04:03:23PM +0100, Jacek Anaszewski wrote:
...
> +static int aat1290_led_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct aat1290_led *led;
> + struct led_classdev *led_cdev;
> + struct led_classdev_flash *fled_cdev;
> + struct aat1290_led_settings settings;
> + int ret;
> +
> + led = devm_kzalloc(dev, sizeof(*led), GFP_KERNEL);
> + if (!led)
> + return -ENOMEM;
> +
> + led->pdev = pdev;
> + platform_set_drvdata(pdev, led);
> +
> + fled_cdev = &led->fled_cdev;
> + led_cdev = &fled_cdev->led_cdev;
> +
> + ret = aat1290_led_parse_dt(led);
> + if (ret < 0)
> + return ret;
> +
> + if (!led_cdev->name)
> + led_cdev->name = AAT1290_NAME;
> +
> + /* Init flash settings */
> + aat1290_init_flash_settings(led, &settings);
> +
> + fled_cdev->timeout = settings.flash_timeout;
> + fled_cdev->ops = &flash_ops;
> +
> + /* Init LED class */
> + led_cdev->brightness_set = aat1290_led_brightness_set;
> + led_cdev->brightness_set_sync = aat1290_led_brightness_set_sync;
> + led_cdev->max_brightness = AAT1290_MM_CURRENT_SCALE_SIZE;
> + led_cdev->flags |= LED_DEV_CAP_FLASH;
> +
> + INIT_WORK(&led->work_brightness_set, aat1290_brightness_set_work);
> +
> + /* Register in the LED subsystem. */
> + ret = led_classdev_flash_register(&pdev->dev, fled_cdev);
> + if (ret < 0)
> + return ret;
> +
> + mutex_init(&led->lock);
I think you must initialise the mutex before led_classdev_flash_register(),
as this exposes the device to the user. Remember mutex_destroy() in error
handling.
> + return 0;
> +}
> +
> +static int aat1290_led_remove(struct platform_device *pdev)
> +{
> + struct aat1290_led *led = platform_get_drvdata(pdev);
> +
> + led_classdev_flash_unregister(&led->fled_cdev);
> + cancel_work_sync(&led->work_brightness_set);
> +
> + mutex_destroy(&led->lock);
> +
> + return 0;
> +}
> +
> +static const struct of_device_id aat1290_led_dt_match[] = {
> + {.compatible = "skyworks,aat1290"},
{ .compatible ... 1290" },
With the two issues fixed,
Acked-by: Sakari Ailus <sakari.ai...@linux.intel.com>
> + {},
> +};
> +
> +static struct platform_driver aat1290_led_driver = {
> + .probe = aat1290_led_probe,
> + .remove = aat1290_led_remove,
> + .driver = {
> + .name = "aat1290",
> + .owner = THIS_MODULE,
> + .of_match_table = aat1290_led_dt_match,
> + },
> +};
> +
> +module_platform_driver(aat1290_led_driver);
> +
> +MODULE_AUTHOR("Jacek Anaszewski <j.anaszew...@samsung.com>");
> +MODULE_DESCRIPTION("Skyworks Current Regulator for Flash LEDs");
> +MODULE_LICENSE("GPL v2");
--
Kind regards,
Sakari Ailus
e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk
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