linux-kernel - Re: [PATCH] ACPI: s2idle: fix section mismatch warning

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Date:   Mon, 5 Jun 2023 19:16:39 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Arnd Bergmann <arnd@...db.de>, Len Brown <lenb@...nel.org>,
        Manyi Li <limanyi@...ontech.com>,
        Juergen Gross <jgross@...e.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Simon Gaiser <simon@...isiblethingslab.com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ACPI: s2idle: fix section mismatch warning

On Thu, Jun 1, 2023 at 11:33 PM Arnd Bergmann <arnd@...nel.org> wrote:
>
> From: Arnd Bergmann <arnd@...db.de>
>
> The acpi_sleep_suspend_setup() function is missing an __init annotation,
> which causes a warning in rare configurations that end up not inlining
> it into its caller:
>
> WARNING: modpost: vmlinux.o: section mismatch in reference: acpi_sleep_suspend_setup (section: .text) -> acpi_s2idle_setup (section: .init.text)
>
> It's only called from an __init function, so adding the annotation is
> correct here.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/acpi/sleep.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
> index 72470b9f16c45..552adc04743b5 100644
> --- a/drivers/acpi/sleep.c
> +++ b/drivers/acpi/sleep.c
> @@ -840,7 +840,7 @@ void __weak acpi_s2idle_setup(void)
>         s2idle_set_ops(&acpi_s2idle_ops);
>  }
>
> -static void acpi_sleep_suspend_setup(void)
> +static void __init acpi_sleep_suspend_setup(void)
>  {
>         bool suspend_ops_needed = false;
>         int i;
> --

Applied as 6.5 material, thanks!