linux-kernel - Re: [PATCH v3] gpio: sim: don't fiddle with GPIOLIB private members

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Message-ID: <CAMRc=McjfYqkX5jL=kwWnceHopebbgDr2XV_h5fjkG=7n7kD-Q@mail.gmail.com>
Date:   Tue, 5 Sep 2023 14:10:38 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Kent Gibson <warthog618@...il.com>, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v3] gpio: sim: don't fiddle with GPIOLIB private members

On Tue, Sep 5, 2023 at 2:09 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
>
> On Tue, Sep 05, 2023 at 03:05:17PM +0300, Andy Shevchenko wrote:
> > On Tue, Sep 05, 2023 at 10:24:13AM +0200, Bartosz Golaszewski wrote:
>
> ...
>
> > > +   chip->swnode = swnode;
> > > +   ret = device_for_each_child(dev, chip, gpio_sim_chip_set_device);
> > > +   if (!ret)
> > > +           return -ENODEV;
> >
> > Can bus_find_device_by_fwnode() be used here?
>
> Answering to myself: you already mentioned that this should cover any bus,
> so the answer is "no".
>

I think I mentioned it under the gpio-consumer where it's true. Here
we are sure it's on the platform bus.

> But also we have device_find_child() if I understood the purpose of the above
> it should suit better, no?
>

Right, it's a better match.

Bart

> --
> With Best Regards,
> Andy Shevchenko
>
>