linux-kernel - Re: checkpatch regression: error on #define pr_fmt(fmt) KBUILD

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Message-ID: <CAAq6er0eXaG7pShVAtbSycs0NiqUbmj99P-Re_N3vWRvym=+5g@mail.gmail.com>
Date:	Fri, 20 Jan 2012 11:53:52 +0000
From:	Andy Whitcroft <apw@...onical.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: checkpatch regression: error on #define pr_fmt(fmt)
 KBUILD_MODNAME ": " fmt

On Wed, Jan 11, 2012 at 9:12 PM, Joe Perches <joe@...ches.com> wrote:
> Current checkpatch gives:
>
> ERROR: Macros with complex values should be enclosed in parenthesis
> #18: FILE: net/ethernet/broadcom/bnx2x/bnx2x_cmn.c:18:
> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>
> due to:
>
> commit b3dfb9bc52e9a751e47bbc92d3a3f07e9a0029c5
> Author: Andy Whitcroft <apw@...onical.com>
> Date:   Thu Dec 22 16:04:25 2011 +1100
>
>    checkpatch: correctly track the end of preprocessor commands in context

That one is hard to detect as being a 'string' and therefore ok.

Ok, looks like we can detect the string concatenation occuring here
and handle this better.  Does the below version work better for you:

    http://people.canonical.com/~apw/checkpatch/checkpatch-next.pl

-apw
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