Re: [PATCH 2/2] iio: adc: ad7606: add enabling of optional Vrefin voltage

["Nuno Sá" <noname.nuno@gmail.com>]

On Fri, 2025-05-30 at 09:39 +0200, Angelo Dureghello wrote:
> On 29.05.2025 12:52, David Lechner wrote:
> > On 5/29/25 4:13 AM, Angelo Dureghello wrote:
> > > From: Angelo Dureghello <adureghello@baylibre.com>
> > > 
> > > Add optional refin voltage enabling. The property "refin-supply" is
> > > already available and optional in the current fdt dt_schema.
> > > 
> > > Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
> > > ---
> > >  drivers/iio/adc/ad7606.c | 4 ++++
> > >  1 file changed, 4 insertions(+)
> > > 
> > > diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
> > > index
> > > 3bbe9c05b5edbc11e8016c995c6ab64104836e7b..21e63260965c32988d0ab3b8bb1201aa
> > > 2396f1ba 100644
> > > --- a/drivers/iio/adc/ad7606.c
> > > +++ b/drivers/iio/adc/ad7606.c
> > > @@ -1335,6 +1335,10 @@ int ad7606_probe(struct device *dev, int irq, void
> > > __iomem *base_address,
> > >  		return dev_err_probe(dev, ret,
> > >  				     "Failed to enable Vdrive supply\n");
> > >  
> > > +	ret = devm_regulator_get_enable_optional(dev, "refin");
> > > +	if (ret < 0 && ret != -ENODEV)
> > 
> > < 0 is probably not needed.
> > 
> The above code looks correct to me. What is the issue ?
>  

Not that there's an issue with the code. I think David means that ret > 0 has no
meaning (function on return values <= 0) which means that if (ret) is enough. 

- Nuno Sá