linux-kernel - Re: [PATCH -next] misc: rtsx: fix build for CONFIG

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Message-ID: <CAK8P3a07PoFGC8jyRG5_CjfVPCc2T79c7Fs_WmHZEkuqtG+oPg@mail.gmail.com>
Date:   Sun, 27 Feb 2022 13:04:50 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Wei WANG <wei_wang@...lsil.com.cn>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH -next] misc: rtsx: fix build for CONFIG_PM not set

On Sat, Feb 26, 2022 at 11:24 PM Randy Dunlap <rdunlap@...radead.org> wrote:

> ---
>  drivers/misc/cardreader/rtsx_pcr.c |    2 ++
>  1 file changed, 2 insertions(+)
>
> --- linux-next-20220225.orig/drivers/misc/cardreader/rtsx_pcr.c
> +++ linux-next-20220225/drivers/misc/cardreader/rtsx_pcr.c
> @@ -1054,6 +1054,7 @@ static int rtsx_pci_acquire_irq(struct r
>         return 0;
>  }
>
> +#ifdef CONFIG_PM
>  static void rtsx_enable_aspm(struct rtsx_pcr *pcr)
>  {
>         if (pcr->ops->set_aspm)
> @@ -1085,6 +1086,7 @@ static void rtsx_pm_power_saving(struct
>  {
>         rtsx_comm_pm_power_saving(pcr);
>  }
> +#endif

Now that we have DEFINE_SIMPLE_DEV_PM_OPS() etc, I think we should
no longer add more __maybe_unused annotations or #ifdef CONFIG_PM checks
but just use the new macros for any new files or whenever a warning like
this shows up.

        Arnd