Re: [PATCH v2 4/4] iio: adc: ti-ads7950: complete conversion to using managed resources

[Jonathan Cameron <jic23@kernel.org>]

On Wed, 18 Feb 2026 18:29:28 -0800
Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote:

> All resources that the driver needs have managed API now. Switch to
> using them to make code clearer and drop ti_ads7950_remove().
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Hi Dmitry

One additional comment from me.

>  static int ti_ads7950_probe(struct spi_device *spi)
>  {

>  	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
> @@ -598,36 +605,36 @@ static int ti_ads7950_probe(struct spi_device *spi)
>  	mutex_init(&st->slock);
>  
>  	st->reg = devm_regulator_get(&spi->dev, "vref");
> -	if (IS_ERR(st->reg)) {
> -		ret = dev_err_probe(&spi->dev, PTR_ERR(st->reg),
> +	error = PTR_ERR_OR_ZERO(st->reg);

To me this reads worse than original IS_ERR() / PTR_ERR() pair.

> +	if (error)
> +		return dev_err_probe(&spi->dev, error,
>  				     "Failed to get regulator \"vref\"\n");
> -		goto error_destroy_mutex;
> -	}
>  
> -	ret = regulator_enable(st->reg);
> -	if (ret) {
> -		dev_err(&spi->dev, "Failed to enable regulator \"vref\"\n");
> -		goto error_destroy_mutex;
> -	}
> +	error = regulator_enable(st->reg);
> +	if (error)
> +		return dev_err_probe(&spi->dev, error,
> +				     "Failed to enable regulator \"vref\"\n");