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Message-ID: <20081216155822.GD12431@fluff.org.uk>
Date:	Tue, 16 Dec 2008 15:58:22 +0000
From:	Ben Dooks <ben-linux@...ff.org>
To:	Hannes Eder <hannes@...neseder.net>
Cc:	Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] HID: avoid sparse warning in HID_COMPAT_LOAD_DRIVER

On Tue, Dec 16, 2008 at 01:31:31PM +0100, Hannes Eder wrote:
> Impact: include a prototype for the exported function in the macro
> 
> Fix about 20 of this warnings:
> 
>   drivers/hid/hid-a4tech.c:162:1: warning: symbol 'hid_compat_a4tech' was not declared. Should it be static?
> 
> Signed-off-by: Hannes Eder <hannes@...neseder.net>
> ---
>  include/linux/hid.h |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/hid.h b/include/linux/hid.h
> index 215035b..81aa84d 100644
> --- a/include/linux/hid.h
> +++ b/include/linux/hid.h
> @@ -793,6 +793,8 @@ dbg_hid(const char *fmt, ...)
>  
>  #ifdef CONFIG_HID_COMPAT
>  #define HID_COMPAT_LOAD_DRIVER(name)	\
> +/* prototype to avoid sparse warning */	\
> +extern void hid_compat_##name(void);	\
>  void hid_compat_##name(void) { }	\

surely this could simply be changed to 'static void hid_compat_##name(void)'
if it is only being defined to be an empty function?

>  EXPORT_SYMBOL(hid_compat_##name)
>  #else
> -- 
> 1.5.6.3
> 
> --
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-- 
Ben (ben@...ff.org, http://www.fluff.org/)

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