linux-kernel - Re: [PATCH v5 2/2] gpio: gpio-cascade: add generic GPIO cascade

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Message-ID: <CAHp75VcFALMECoxQH=YHzfs23dOhngYS0pMUySyj3Lkh+D7BhA@mail.gmail.com>
Date:   Fri, 15 Oct 2021 20:20:23 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Mauri Sandberg <maukka@....kapsi.fi>
Cc:     Mauri Sandberg <sandberg@...lfence.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Linus Walleij <linus.walleij@...aro.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Drew Fustini <drew@...gleboard.org>
Subject: Re: [PATCH v5 2/2] gpio: gpio-cascade: add generic GPIO cascade

On Fri, Oct 15, 2021 at 3:56 PM Mauri Sandberg <maukka@....kapsi.fi> wrote:
> On 21.6.2021 20.43, Andy Shevchenko wrote:
>
> >> +       gc->of_node = np;
> >
> > This should be guarded by CONFIG_OF_GPIO.

The above is actually done by the GPIO library nowadays.

> In the Kconfig I have a dependency to OF_GPIO. Is the guarding still
> necessary? Or should the guard be added and dependency removed? Or have
> them both?

For this kind ("generic") driver the OF_GPIO dependency is simply
wrong. You shouldn't have it.

-- 
With Best Regards,
Andy Shevchenko