linux-kernel - Re: [PATCH v4 3/8] gpio: cdev: go back to storing debounce period in the GPIO descriptor

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Message-ID: <CAMRc=Md=6WkwJRt7-7K0fTqOUMz3EzzOGLPbiq2SEw1+1Acc4A@mail.gmail.com>
Date: Thu, 17 Oct 2024 16:13:14 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Kent Gibson <warthog618@...il.com>
Cc: Linus Walleij <linus.walleij@...aro.org>, linux-gpio@...r.kernel.org, 
	linux-kernel@...r.kernel.org, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v4 3/8] gpio: cdev: go back to storing debounce period in
 the GPIO descriptor

On Thu, Oct 17, 2024 at 2:44 PM Kent Gibson <warthog618@...il.com> wrote:
>
> On Thu, Oct 17, 2024 at 10:14:11AM +0200, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> >
> > @@ -1047,7 +925,7 @@ static int debounce_setup(struct line *line, unsigned int debounce_period_us)
> >       /* try hardware */
> >       ret = gpiod_set_debounce(line->desc, debounce_period_us);
> >       if (!ret) {
> > -             line_set_debounce_period(line, debounce_period_us);
> > +             WRITE_ONCE(line->desc->debounce_period_us, debounce_period_us);
> >               return ret;
> >       }
>
> Not related to this change, but this check looks redundant to me - the same
> is performed where debounce_setup() is called.
>
> Want a patch to remove it?
>
> Cheers,
> Kent.

Sure! Can you rebase it on top of my series?

Bart