linux-kernel - Re: [PATCH v4 1/2] asm-generic/bug.h: declare struct pt

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Message-ID: <xa1twp972z1g.fsf@mina86.com>
Date:   Tue, 23 May 2017 20:44:43 +0200
From:   Michal Nazarewicz <mina86@...a86.com>
To:     Ian Abbott <abbotti@....co.uk>, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org
Cc:     Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>,
        Borislav Petkov <bp@...e.de>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Johannes Berg <johannes.berg@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Alexander Potapenko <glider@...gle.com>,
        Ian Abbott <abbotti@....co.uk>
Subject: Re: [PATCH v4 1/2] asm-generic/bug.h: declare struct pt_regs; before function prototype

On Tue, May 23 2017, Ian Abbott wrote:
> The declaration of `__warn()` has `struct pt_regs *regs` as one of its
> parameters.  This can result in compiler warnings if `struct regs` is
> not already declared.  Add an empty declaration of `struct pt_regs` to
> avoid the warnings.
>
> Signed-off-by: Ian Abbott <abbotti@....co.uk>
> Cc: Arnd Bergmann <arnd@...db.de>
> Acked-by: Arnd Bergmann <arnd@...db.de>

Acked-by: Michal Nazarewicz <mina86@...a86.com>

> ---
> v3: Actually, there was no v1 or v2.  I called this v3 to match the
> series.
> v4: Corrected 'Acked-by:' line in patch description.
> ---
>  include/asm-generic/bug.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
> index d6f4aed479a1..87191357d303 100644
> --- a/include/asm-generic/bug.h
> +++ b/include/asm-generic/bug.h
> @@ -97,6 +97,7 @@ extern void warn_slowpath_null(const char *file, const int line);
>  
>  /* used internally by panic.c */
>  struct warn_args;
> +struct pt_regs;
>  
>  void __warn(const char *file, int line, void *caller, unsigned taint,
>  	    struct pt_regs *regs, struct warn_args *args);

-- 
Best regards
ミハウ “𝓶𝓲𝓷𝓪86” ナザレヴイツ
«If at first you don’t succeed, give up skydiving»