linux-kernel - Re: [RFC PATCH 1/5] watchdog: Add API to trigger reboots

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Date:	Wed, 7 May 2014 14:15:01 -0500
From:	Maxime Ripard <maxime.ripard@...e-electrons.com>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Lucas Stach <l.stach@...gutronix.de>,
	Russell King <linux@....linux.org.uk>,
	linux-watchdog@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	linux-kernel@...r.kernel.org,
	Jonas Jensen <jonas.jensen@...il.com>,
	Wim Van Sebroeck <wim@...ana.be>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC PATCH 1/5] watchdog: Add API to trigger reboots

On Wed, May 07, 2014 at 06:01:31AM -0700, Guenter Roeck wrote:
> >This means we could have multiple watchdogs in the system, where we
> >really want a specific one (maybe designated through a DT property) to
> >do the reset. This isn't compatible with the "last watchdog that
> >registers a handler wins the system reset" logic in your patch.
> >
> 
> Wouldn't the order in which watchdogs are configured in dt define that ?
> The last one wins.

It doesn't work, because the DT nodes are usually ordered by physical
address.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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