linux-kernel - Re: [PATCH] gpio: pxa: schedule a devm action for the clock struct

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Date:   Wed, 6 Jul 2022 14:11:42 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Stephen Boyd <swboyd@...omium.org>
Cc:     Robert Jarzmik <robert.jarzmik@...e.fr>,
        Linus Walleij <linus.walleij@...aro.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Hulk Robot <hulkci@...wei.com>, Yuan Can <yuancan@...wei.com>
Subject: Re: [PATCH] gpio: pxa: schedule a devm action for the clock struct

On Wed, Jul 6, 2022 at 1:49 PM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
s>
> On Tue, Jul 5, 2022 at 7:29 PM Bartosz Golaszewski <brgl@...ev.pl> wrote:
> >
> > The clock is never released after probe(). Schedule devm actions for
> > putting and disabling the clock.
>
> ...
>
> > Reported-by: Signed-off-by: Yuan Can <yuancan@...wei.com>
>
> Me puzzled.
>

Yuan Can sent the following patch:
https://patchwork.ozlabs.org/project/linux-gpio/patch/20220704130323.104294-1-yuancan@huawei.com/

I responded that it was not complete and sent this instead.

>
> ...
>
> > +       ret = devm_add_action_or_reset(&pdev->dev, pxa_gpio_clk_put, clk);
> > +       if (ret)
> > +               return ret;
> > +
> >         ret = clk_prepare_enable(clk);
> > +       if (ret)
> > +               return ret;
> > +
> > +       ret = devm_add_action_or_reset(&pdev->dev,
> > +                                      pxa_gpio_clk_disable_unprepare, clk);
> > +       if (ret)
> >                 return ret;
>
> Can we use recently introduced clk APIs for that? Maybe Stephen has an
> immutable branch you may reuse?

Sure, sounds good! Stephen, would you mind providing me with a branch for that?

Bart

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