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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Mon, 17 Jul 2023 22:33:47 +0300
Message-ID: <CAHp75Vcjq9=Q2_fsGJ9oCw=WYR3p3ot_cNLiDJV93psNcXXHLw@mail.gmail.com>
Subject: Re: [PATCH v2 04/10] pinctrl: intel: Switch to use
 DEFINE_NOIRQ_DEV_PM_OPS() helper
To:     Paul Cercueil <paul@crapouillou.net>
Cc:     Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Mika Westerberg <mika.westerberg@linux.intel.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Balsam CHIHI <bchihi@baylibre.com>,
        Claudiu Beznea <claudiu.beznea@microchip.com>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Wolfram Sang <wsa+renesas@sang-engineering.com>,
        Thierry Reding <thierry.reding@gmail.com>,
        linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mediatek@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org,
        linux-renesas-soc@vger.kernel.org, linux-tegra@vger.kernel.org,
        linux-pm@vger.kernel.org, Andy Shevchenko <andy@kernel.org>,
        Sean Wang <sean.wang@kernel.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Gregory Clement <gregory.clement@bootlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
        Ludovic Desroches <ludovic.desroches@microchip.com>,
        Nicolas Ferre <nicolas.ferre@microchip.com>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>
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On Mon, Jul 17, 2023 at 10:02=E2=80=AFPM Paul Cercueil <paul@crapouillou.ne=
t> wrote:
> Le lundi 17 juillet 2023 =C3=A0 20:28 +0300, Andy Shevchenko a =C3=A9crit=
 :

...

> Unrelated change.

OK.

...

> So the correct way to update this driver would be to have a
> conditionally-exported dev_pm_ops structure:
>
> EXPORT_GPL_DEV_PM_OPS(intel_pinctrl_pm_ops) =3D {
>     NOIRQ_SYSTEM_SLEEP_PM_OPS(intel_pinctrl_suspend_noirq,
> intel_pinctrl_resume_noirq),
> };

This looks ugly. I didn't know that EXPORT*PM_OPS designed that way,
but it seems pm.h in such case needs EXPORT for NOIRQ case as well.

> Then your two callbacks can be "static" and without #ifdef guards.
>
> The resulting "intel_pinctrl_pm_ops" can be marked as "extern" in the
> pinctrl-intel.h without any guards, as long as it is only referenced
> with the pm_ptr() macro.

I'm not sure I got this. Currently drivers do not have any guards.
Moreover, the correct one for noirq is pm_sleep_ptr(), isn't it?

--=20
With Best Regards,
Andy Shevchenko