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References: <20230711072053.2837327-1-geert+renesas@glider.be>
In-Reply-To: <20230711072053.2837327-1-geert+renesas@glider.be>
From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Tue, 11 Jul 2023 12:00:37 +0300
Message-ID: <CAHp75VfqEgysCHK9qFBSOrpQqW68LUA=i4EEYMaM8e1UeMzCMw@mail.gmail.com>
Subject: Re: [PATCH] gpio: mxc: Improve PM configuration
To:     Geert Uytterhoeven <geert+renesas@glider.be>
Cc:     Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <brgl@bgdev.pl>,
        Andy Shevchenko <andy@kernel.org>,
        Shenwei Wang <shenwei.wang@nxp.com>,
        linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org
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On Tue, Jul 11, 2023 at 10:21=E2=80=AFAM Geert Uytterhoeven
<geert+renesas@glider.be> wrote:
>
> If CONFIG_PM=3Dn (e.g. m68k/allmodconfig):
>
>     drivers/gpio/gpio-mxc.c:612:12: error: =E2=80=98mxc_gpio_runtime_resu=
me=E2=80=99 defined but not used [-Werror=3Dunused-function]
>       612 | static int mxc_gpio_runtime_resume(struct device *dev)
>           |            ^~~~~~~~~~~~~~~~~~~~~~~
>     drivers/gpio/gpio-mxc.c:602:12: error: =E2=80=98mxc_gpio_runtime_susp=
end=E2=80=99 defined but not used [-Werror=3Dunused-function]
>       602 | static int mxc_gpio_runtime_suspend(struct device *dev)
>           |            ^~~~~~~~~~~~~~~~~~~~~~~~
>
> Fix this by using the non-SET *_PM_OPS to configure the dev_pm_ops
> callbacks, and by wrapping the driver.pm initializer insider pm_ptr().
>
> As NOIRQ_SYSTEM_SLEEP_PM_OPS() uses pm_sleep_ptr() internally, the
> __maybe_unused annotations for the noirq callbacks are no longer needed,
> and can be removed.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>

> Fixes: 3283d820dce649ad ("gpio: mxc: add runtime pm support")
> Reported-by: noreply@ellerman.id.au
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>  drivers/gpio/gpio-mxc.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
> index a9fb6bd9aa6f9645..a43df5d5006e62d3 100644
> --- a/drivers/gpio/gpio-mxc.c
> +++ b/drivers/gpio/gpio-mxc.c
> @@ -623,7 +623,7 @@ static int mxc_gpio_runtime_resume(struct device *dev=
)
>         return 0;
>  }
>
> -static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
> +static int mxc_gpio_noirq_suspend(struct device *dev)
>  {
>         struct platform_device *pdev =3D to_platform_device(dev);
>         struct mxc_gpio_port *port =3D platform_get_drvdata(pdev);
> @@ -634,7 +634,7 @@ static int __maybe_unused mxc_gpio_noirq_suspend(stru=
ct device *dev)
>         return 0;
>  }
>
> -static int __maybe_unused mxc_gpio_noirq_resume(struct device *dev)
> +static int mxc_gpio_noirq_resume(struct device *dev)
>  {
>         struct platform_device *pdev =3D to_platform_device(dev);
>         struct mxc_gpio_port *port =3D platform_get_drvdata(pdev);
> @@ -647,8 +647,8 @@ static int __maybe_unused mxc_gpio_noirq_resume(struc=
t device *dev)
>  }
>
>  static const struct dev_pm_ops mxc_gpio_dev_pm_ops =3D {
> -       SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mxc_gpio_noirq_suspend, mxc_gpio_no=
irq_resume)
> -       SET_RUNTIME_PM_OPS(mxc_gpio_runtime_suspend, mxc_gpio_runtime_res=
ume, NULL)
> +       NOIRQ_SYSTEM_SLEEP_PM_OPS(mxc_gpio_noirq_suspend, mxc_gpio_noirq_=
resume)
> +       RUNTIME_PM_OPS(mxc_gpio_runtime_suspend, mxc_gpio_runtime_resume,=
 NULL)
>  };
>
>  static int mxc_gpio_syscore_suspend(void)
> @@ -695,7 +695,7 @@ static struct platform_driver mxc_gpio_driver =3D {
>                 .name   =3D "gpio-mxc",
>                 .of_match_table =3D mxc_gpio_dt_ids,
>                 .suppress_bind_attrs =3D true,
> -               .pm =3D &mxc_gpio_dev_pm_ops,
> +               .pm =3D pm_ptr(&mxc_gpio_dev_pm_ops),
>         },
>         .probe          =3D mxc_gpio_probe,
>  };
> --
> 2.34.1
>


--=20
With Best Regards,
Andy Shevchenko