linux-kernel - Re: [PATCH] saa7146: fix sparse warnings

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Message-Id: <20080302115743.c9a0a280.akpm@linux-foundation.org>
Date:	Sun, 2 Mar 2008 11:57:43 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Harvey Harrison <harvey.harrison@...il.com>
Cc:	Dmitri Vorobiev <dmitri.vorobiev@...il.com>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] saa7146: fix sparse warnings

On Sun, 02 Mar 2008 10:06:44 -0800 Harvey Harrison <harvey.harrison@...il.com> wrote:

> On Sun, 2008-03-02 at 20:34 +0300, Dmitri Vorobiev wrote:
> > Harvey Harrison пишет:
> > >  
> > > -	if( 0 != (dev->ext)) {
> > > +	if( NULL != (dev->ext)) {
> > 
> > At the risk of looking an idiot, I'm taking a liberty to ask what is
> > the point in explicit comparison to zero in conditional operators? Is
> > it not a fundamental C idiom to write
> 
> <snip>
> 
> Yes, that's how I would have written it, but I tried to keep with the
> prevailing style in that file.

I'm not a bit fan of the match-the-existing-style approach.

You'll find that files which started out with a non-standard style already
contain a mixup of styles, because later changes were often made in
standard-style.

And given that we're churning the code anyway, we might as well fix it up now. 
Yes, that'll make the code look partially-weird rather than wholly-weird,
but I doubt if that will harm anyone much.

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