Re: [PATCH v2] gpiolib: Disallow identical line names in the same chip

[Andy Shevchenko <andy.shevchenko@xxxxxxxxx>]

On Fri, Jan 8, 2021 at 4:39 PM Flavio Suligoi <f.suligoi@xxxxxxx> wrote:

...

> > > For example, something like the following:
> > >
> > > # gpiofind button_1
> > > gpiochip0 20
> > > gpiochip0 22 (duplicate)
> >
> > This cannot happen, as the duplicate is on the same gpiochip.
>
> Just a question:  I think that a duplicate name can be present
> both in the same gpiochip

No. This is against common sense. Can you have the same pin numbers on one chip?

> and also in different gpiochips.

Yes and it's fine.

> The same gpio line name can be wrongly present on different gpiochips,
> for example caused by a mistake writing an ACPI table.

-- 
With Best Regards,
Andy Shevchenko