linux-kernel - Re: [PATCH v2 01/10] pm: Introduce DEFINE_NOIRQ_DEV_PM

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Date:   Tue, 18 Jul 2023 10:55:43 +0100
From:   Jonathan Cameron <Jonathan.Cameron@...wei.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC:     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>,
        Paul Cercueil <paul@...pouillou.net>,
        <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>, Andy Shevchenko <andy@...nel.org>,
        Andrew Lunn <andrew@...n.ch>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Len Brown <len.brown@...el.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sean Wang <sean.wang@...nel.org>,
        "Jonathan Hunter" <jonathanh@...dia.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Pavel Machek <pavel@....cz>,
        "Matthias Brugger" <matthias.bgg@...il.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v2 01/10] pm: Introduce DEFINE_NOIRQ_DEV_PM_OPS() helper

On Mon, 17 Jul 2023 20:28:12 +0300
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> _DEFINE_DEV_PM_OPS() helps to define PM operations for the system sleep
> and/or runtime PM cases. Some of the existing users want to have _noirq()
> variants to be set. For that purpose introduce a new helper which sets
> up _noirq() callbacks to be set and struct dev_pm_ops be provided.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Seems reasonable to me given it is fairly common

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>

> ---
>  include/linux/pm.h | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/include/linux/pm.h b/include/linux/pm.h
> index badad7d11f4f..0f19af8d5493 100644
> --- a/include/linux/pm.h
> +++ b/include/linux/pm.h
> @@ -448,6 +448,15 @@ const struct dev_pm_ops __maybe_unused name = { \
>  	SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
>  }
>  
> +/*
> + * Use this if you want to have the suspend and resume callbacks be called
> + * with disabled IRQs.
> + */
> +#define DEFINE_NOIRQ_DEV_PM_OPS(name, suspend_fn, resume_fn) \
> +const struct dev_pm_ops name = { \
> +	NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
> +}
> +
>  #define pm_ptr(_ptr) PTR_IF(IS_ENABLED(CONFIG_PM), (_ptr))
>  #define pm_sleep_ptr(_ptr) PTR_IF(IS_ENABLED(CONFIG_PM_SLEEP), (_ptr))
>