Re: [PATCH v5 3/4] iio: adc: ad799x: cache regulator voltages during probe

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

On Sat, Mar 21, 2026 at 06:27:10PM +0000, Jonathan Cameron wrote:
> On Wed, 18 Mar 2026 14:57:14 +0530
> Archit Anant <architanant5@gmail.com> wrote:

...

> cleanest option might be;
> 
> 	ret = devm_regulator_get_enable_read_voltage(dev, "vref");

> 	if (ret < 0 && ret != -ENODEV){ //get the actual error out the way first.
> 		return ret;

While the comment is true, I nevertheless prefer in this case (basically
regulator) to avoid double checking for ENODEV, id est...

> 	if (ret == -ENODEV) {
> 		ret = devm_regulator_get_enable_read_voltage(dev, "vcc");
> 		if (ret < 0)
> 			return ret;
> 
> 		st->vref_uv = ret;

...put it here as

	} else if (ret) {
		return ret;

> 	} else {
> 		st->vref_uv = ret;
> 		ret = devm_regulator_get_enabled(dev, "vcc);
> 		if (ret)
> 			return ret;
> 	}
> 
> Then no need to undo anything by hand in remove() and no need to keep
> a pointer to any regulators around for later.

-- 
With Best Regards,
Andy Shevchenko