linux-kernel - Re: [PATCH 06/14] [media] cx18: Use current logging styles

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Message-ID: <20110827190538.21357785@tele>
Date:	Sat, 27 Aug 2011 19:05:38 +0200
From:	Jean-Francois Moine <moinejf@...e.fr>
To:	Joe Perches <joe@...ches.com>
Cc:	Andy Walls <awalls@...metrocast.net>, ivtv-devel@...vdriver.org,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 06/14] [media] cx18: Use current logging styles

On Sat, 27 Aug 2011 09:42:32 -0700
Joe Perches <joe@...ches.com> wrote:

> Andy, I fully understand how this stuff works.
> You apparently don't (yet).
> 
> Look at include/linux/printk.h
> 
> #ifndef pr_fmt
> #define pr_fmt(fmt) fmt
> #endif
> 
> A default empty define is used when one
> is not specified before printk.h is
> included.  kernel.h includes printk.h

Hi Joe,

Yes, but, what if pr_fmt is redefined in some driver specific include
by:

#undef pr_fmt
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

(in gspca.h for example) ?

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/
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