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From:   Arnd Bergmann <arnd@kernel.org>
Date:   Tue, 8 Dec 2020 15:04:45 +0100
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Subject: Re: [PATCH] mmc: mediatek: mark PM functions as __maybe_unused
To:     Paul Cercueil <paul@crapouillou.net>
Cc:     Ulf Hansson <ulf.hansson@linaro.org>,
        Chaotian Jing <chaotian.jing@mediatek.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Wenbin Mei <wenbin.mei@mediatek.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Chun-Hung Wu <chun-hung.wu@mediatek.com>,
        yong mao <yong.mao@mediatek.com>,
        Amey Narkhede <ameynarkhede03@gmail.com>,
        Marek Vasut <marex@denx.de>,
        linux-mmc <linux-mmc@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        "ARM/Mediatek SoC support" <linux-mediatek@lists.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
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On Mon, Dec 7, 2020 at 1:33 PM Paul Cercueil <paul@crapouillou.net> wrote:
> Le ven. 4 d=C3=A9c. 2020 =C3=A0 15:14, Arnd Bergmann <arnd@kernel.org> a =
=C3=A9crit

> By the way, as I'm ending up doing the same in a different context, I
> think it would be useful to have a IF_ENABLED() macro defined like this:
>
> #define IF_ENABLED(_cfg, _ptr) (IS_ENABLED(_cfg) ? (_ptr) : NULL)
>
> Then the pm_ptr(_ptr) macro could be defined like this:
>
> #define pm_ptr(_ptr) IF_ENABLED(CONFIG_PM, _ptr)

I like that. Do you just want to go ahead and start with adding
IF_ENABLED() to your own branch then?

    Arnd