linux-kernel - Re: [PATCH 01/11] watchdog: WatchDog Timer Driver Core

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Date:	Tue, 12 Jul 2011 00:53:06 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	Wim Van Sebroeck <wim@...ana.be>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux Watchdog Mailing List <linux-watchdog@...r.kernel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH 01/11] watchdog: WatchDog Timer Driver Core - Add basic
	framework

On Tue, Jul 12, 2011 at 01:00:25AM +0200, Lars-Peter Clausen wrote:
> On 07/11/2011 04:19 PM, Wim Van Sebroeck wrote:

> > +	/* stop the watchdog */
> > +	err = wdd->ops->stop(wdd);
> Does it really make sense to allow stop() to fail? Will this ever happen, and

Some hardware can't be stopped, sometimes depending on circumstance.

> if yes do we gain anything by sending a additional ping?

It would increase the chances that someone sees the error message, or
that it gets written to disk or whatever (especially if the watchdog
time is short).
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