linux-kernel - Re: [PATCH] hwmon: (raspberrypi) Exit immediately in case of error in init

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Message-ID: <20211217153124.GA2486939@roeck-us.net>
Date:   Fri, 17 Dec 2021 07:31:24 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Armin Wolf <W_Armin@....de>
Cc:     jdelvare@...e.com, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hwmon: (raspberrypi) Exit immediately in case of error
 in init

On Sat, Dec 11, 2021 at 07:44:49PM +0100, Armin Wolf wrote:
> Exit immediately if devm_hwmon_device_register_with_info()
> fails since registering a delayed work whould be useless
> in such a case anyway.
> 
> Signed-off-by: Armin Wolf <W_Armin@....de>

Applied.

Thanks,
Guenter

> ---
>  drivers/hwmon/raspberrypi-hwmon.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> --
> 2.30.2
> 
> diff --git a/drivers/hwmon/raspberrypi-hwmon.c b/drivers/hwmon/raspberrypi-hwmon.c
> index 573f53d52912..1650d3b4c26e 100644
> --- a/drivers/hwmon/raspberrypi-hwmon.c
> +++ b/drivers/hwmon/raspberrypi-hwmon.c
> @@ -120,6 +120,8 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
>  							       data,
>  							       &rpi_chip_info,
>  							       NULL);
> +	if (IS_ERR(data->hwmon_dev))
> +		return PTR_ERR(data->hwmon_dev);
> 
>  	ret = devm_delayed_work_autocancel(dev, &data->get_values_poll_work,
>  					   get_values_poll);
> @@ -127,10 +129,9 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
>  		return ret;
>  	platform_set_drvdata(pdev, data);
> 
> -	if (!PTR_ERR_OR_ZERO(data->hwmon_dev))
> -		schedule_delayed_work(&data->get_values_poll_work, 2 * HZ);
> +	schedule_delayed_work(&data->get_values_poll_work, 2 * HZ);
> 
> -	return PTR_ERR_OR_ZERO(data->hwmon_dev);
> +	return 0;
>  }
> 
>  static struct platform_driver rpi_hwmon_driver = {