Re: [PATCH v4 2/4] iio: adc: mcp3911: simplify usage of spi->dev in probe function

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

On Tue, Aug 08, 2023 at 01:04:30PM +0200, Marcus Folkesson wrote:
> Replace the usage of adc->spi->dev with spi->dev to make the code prettier.

Suggested-by: ?

> Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>

...

> -	adc->vref = devm_regulator_get_optional(&adc->spi->dev, "vref");
> +	adc->vref = devm_regulator_get_optional(&spi->dev, "vref");

Why not

	struct device *dev = &spi->dev;

and all the rest accordingly?

>  	if (IS_ERR(adc->vref)) {
>  		if (PTR_ERR(adc->vref) == -ENODEV) {
>  			adc->vref = NULL;
>  		} else {
> -			dev_err(&adc->spi->dev,
> +			dev_err(&spi->dev,
>  				"failed to get regulator (%ld)\n",
>  				PTR_ERR(adc->vref));
>  			return PTR_ERR(adc->vref);

Actually, you may first to switch to dev_err_probe() with the above introduced

	struct device *dev = &spi->dev;
	...
			return dev_err_probe(dev, PTR_ERR(adc->vref),
					     "failed to get regulator\n",

and in the second patch do what you are doing here.

Will be much less changes and neater code at the end.

-- 
With Best Regards,
Andy Shevchenko