linux-kernel - Re: [PATCH] 2/3 mtd: add support for flash on the SEGA Dreamcast Visual Memory Unit

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Date:	Mon, 24 Mar 2008 23:46:31 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Adrian McMenamin <adrian@...golddream.dyndns.info>
Cc:	J?rn Engel <joern@...fs.org>, Andrew Morton <akpm@...l.org>,
	linux-sh <linux-sh@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	MTD <linux-mtd@...ts.infradead.org>
Subject: Re: [PATCH] 2/3 mtd: add support for flash on the SEGA Dreamcast Visual Memory Unit

On Mon, Mar 24, 2008 at 02:43:16PM +0000, Adrian McMenamin wrote:
> On Mon, 2008-03-24 at 15:10 +0100, J??rn Engel wrote:
> > On Mon, 24 March 2008 13:58:40 +0000, Adrian McMenamin wrote:
> > > 
> > > Tempting as it is to continue the war, discretion will be the better
> > > part of valour here and I will give you the last word.
> > > 
> > > Of course I don't mind you sending patches. Indeed it would be very
> > > helpful and generous of you to do so.
> > 
> > Good.  The first four shouldn't change any behaviour.  Number five flips
> > positive error returns into negative ones.  I believe the old behaviour
> > is a bug.  Worth a second look to make sure.
> > 
> > All five patches are attached.  Hope that doesn't cause any problems.
> 
> Well, I haven't got round to applying them and testing them yet, though
> they look ok, obviously, except for one thing: I'm pretty much where you
> are on the goto versus return thing, but got pretty clear instructions
> on a previous patch from Andrew Morton that using gotos to ensure
> functions limit the number of return points is the way to go.
> 
The gotos help clean up the error path when you have something to do. In
this case there's nothing going on but a NULL return, so it really
doesn't matter one way or the other. Most people tend to avoid the goto
if you really have nothing to do in an error path.
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