linux-kernel - Re: [PATCH v2 06/10] pinctrl: at91: Switch to use DEFINE_NOIRQ_DEV_PM

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Date:   Mon, 17 Jul 2023 21:25:53 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Balsam CHIHI <bchihi@...libre.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Thierry Reding <thierry.reding@...il.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-pm@...r.kernel.org
Cc:     Andy Shevchenko <andy@...nel.org>,
        Sean Wang <sean.wang@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>
Subject: Re: [PATCH v2 06/10] pinctrl: at91: Switch to use
 DEFINE_NOIRQ_DEV_PM_OPS() helper

Hi Andy,

Le lundi 17 juillet 2023 à 20:28 +0300, Andy Shevchenko a écrit :
> Since pm.h provides a helper for system no-IRQ PM callbacks,
> switch the driver to use it instead of open coded variant.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Reviewed-by: Paul Cercueil <paul@...pouillou.net>

Although you could add a bit more info in the message of this patch, to
explain why it's OK to remove the __maybe_unused tags (the code is
always visible) and why switch from pm_ptr() to pm_sleep_ptr() (it's
only used for system-PM callbacks).

Cheers,
-Paul

> ---
>  drivers/pinctrl/pinctrl-at91.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-at91.c
> b/drivers/pinctrl/pinctrl-at91.c
> index 39956d821ad7..608f55c5ba5f 100644
> --- a/drivers/pinctrl/pinctrl-at91.c
> +++ b/drivers/pinctrl/pinctrl-at91.c
> @@ -1657,7 +1657,7 @@ static int gpio_irq_set_wake(struct irq_data
> *d, unsigned state)
>         return 0;
>  }
>  
> -static int __maybe_unused at91_gpio_suspend(struct device *dev)
> +static int at91_gpio_suspend(struct device *dev)
>  {
>         struct at91_gpio_chip *at91_chip = dev_get_drvdata(dev);
>         void __iomem *pio = at91_chip->regbase;
> @@ -1675,7 +1675,7 @@ static int __maybe_unused
> at91_gpio_suspend(struct device *dev)
>         return 0;
>  }
>  
> -static int __maybe_unused at91_gpio_resume(struct device *dev)
> +static int at91_gpio_resume(struct device *dev)
>  {
>         struct at91_gpio_chip *at91_chip = dev_get_drvdata(dev);
>         void __iomem *pio = at91_chip->regbase;
> @@ -1903,15 +1903,13 @@ static int at91_gpio_probe(struct
> platform_device *pdev)
>         return 0;
>  }
>  
> -static const struct dev_pm_ops at91_gpio_pm_ops = {
> -       NOIRQ_SYSTEM_SLEEP_PM_OPS(at91_gpio_suspend,
> at91_gpio_resume)
> -};
> +static DEFINE_NOIRQ_DEV_PM_OPS(at91_gpio_pm_ops, at91_gpio_suspend,
> at91_gpio_resume);
>  
>  static struct platform_driver at91_gpio_driver = {
>         .driver = {
>                 .name = "gpio-at91",
>                 .of_match_table = at91_gpio_of_match,
> -               .pm = pm_ptr(&at91_gpio_pm_ops),
> +               .pm = pm_sleep_ptr(&at91_gpio_pm_ops),
>         },
>         .probe = at91_gpio_probe,
>  };