linux-kernel - Re: [PATCH 13/16] ARM: vfp: add vfp

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Date:   Wed, 17 May 2023 13:13:35 +0200
From:   Ard Biesheuvel <ardb@...nel.org>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Russell King <linux@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Oleg Nesterov <oleg@...hat.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Pavel Machek <pavel@....cz>,
        Linus Walleij <linus.walleij@...aro.org>,
        Kees Cook <keescook@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-trace-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH 13/16] ARM: vfp: add vfp_entry prototype

On Tue, 16 May 2023 at 17:47, Arnd Bergmann <arnd@...nel.org> wrote:
>
> From: Arnd Bergmann <arnd@...db.de>
>
> vfp_entry is only called from assembler code, so it does not
> need a declaration. Since gcc complains when extra warnings
> are enabled, add one anyway to avoid:
>
> arch/arm/vfp/vfpmodule.c:657:17: warning: no previous prototype for function 'vfp_entry' [-Wmissing-prototypes]
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

This one will conflict with my VFP asm to C conversion series.

> ---
>  arch/arm/vfp/vfp.h | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm/vfp/vfp.h b/arch/arm/vfp/vfp.h
> index 5cd6d5053271..10d9c0da0fd4 100644
> --- a/arch/arm/vfp/vfp.h
> +++ b/arch/arm/vfp/vfp.h
> @@ -375,3 +375,6 @@ struct op {
>  };
>
>  asmlinkage void vfp_save_state(void *location, u32 fpexc);
> +struct thread_info;
> +asmlinkage void vfp_entry(u32 trigger, struct thread_info *ti, u32 resume_pc,
> +                         u32 resume_return_address);
> --
> 2.39.2
>