Re: [PATCH 2/2] gpiolib: cdev: export the consumer's PID

Andy Shevchenko
2022-09-13T18:06:50Z

On Wed, Sep 14, 2022 at 12:17:39AM +0800, Kent Gibson wrote:
> On Tue, Sep 13, 2022 at 05:58:32PM +0200, Bartosz Golaszewski wrote:
> > On Tue, Sep 13, 2022 at 4:55 PM Kent Gibson <warthog618@gmail.com> wrote:

...

> > We'd need of course first expose that info like:
> >
> > gpio chip:gpiochip2 lines:0,3,4,7
> >
> > Does that make sense?
>
> Makes sense to me, though I don't claim to know anything about fdinfo
> field formatting.
>
> e.g. I also see fdinfo fields like this:
>
> eventfd-count: 0
> eventfd-id: 1
>
> so
>
> gpio-chip: gpiochip2
> gpio-lines: 0,3,4,7
>
> might be ok too.

Always think about two or more GPIO chips in the same process with 1 or more
lines requested from each of them.

--
With Best Regards,
Andy Shevchenko