Re: [PATCH v10 3/3] iio: dac: Add AD5529R DAC driver support

[Jonathan Cameron <jic23@kernel.org>]

> > +static int ad5529r_parse_channel_ranges(struct device *dev,
> > +					struct ad5529r_state *st)
> > +{
> > +	unsigned long channel_mask = 0;
> > +	s32 vals[2];
> > +	int ret, range_idx;
> > +	u32 ch;
> > +
> > +	device_for_each_child_node_scoped(dev, child) {
> > +		if (st->num_channels == ARRAY_SIZE(st->channels))
> > +			return dev_err_probe(dev, -ECHRNG, "Too many channels\n");
> 
> Okay, this actually better to be ENOSPC
> 
> > +		ret = fwnode_property_read_u32(child, "reg", &ch);
> > +		if (ret)
> > +			return dev_err_probe(dev, ret,
> > +					     "Missing reg property in channel node\n");
> > +
> > +		if (ch >= AD5529R_MAX_CHANNELS)
> > +			return dev_err_probe(dev, -EINVAL,
> 
> and ECHRNG is here.

That one is getting rather creative even though I guess the description
does fit rather well.  So I don't object, but also feel -EINVAL is
probably good enough for an invalid property value.

> 
> > +					     "Channel %u exceeds maximum 15\n",
> 

J