linux-kernel - Re: AT91SAM9/CAP9 watchdog driver

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Message-ID: <20080604123642.51449a04@core>
Date:	Wed, 4 Jun 2008 12:36:42 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"Andrew Victor" <avictor.za@...il.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>, wim@...ana.be,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: Re: AT91SAM9/CAP9 watchdog driver

On Wed, 4 Jun 2008 09:31:50 +0200
"Andrew Victor" <avictor.za@...il.com> wrote:

> hi Andrew,
> 
> >> +             return 0;
> >
> > That looks like the wrong return value?
> 
> Since the watchdog registers are Write-Once, if the user does not
> specify a "wdt_timeout" parameter we'd still like the driver to load
> even if it's not enabled.

Surely you can avoid doing the register writes until after you check the
validity of arguments ?
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