linux-kernel - Re: [PATCH 5/8] watchdog: imx2: Convert to use infrastructure triggered keepalives

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Date:	Tue, 4 Aug 2015 17:44:22 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	linux-watchdog@...r.kernel.org, Wim Van Sebroeck <wim@...ana.be>,
	linux-kernel@...r.kernel.org,
	Timo Kokkonen <timo.kokkonen@...code.fi>,
	linux-doc@...r.kernel.org, Jonathan Corbet <corbet@....net>
Subject: Re: [PATCH 5/8] watchdog: imx2: Convert to use infrastructure
 triggered keepalives

Hello,

On Mon, Aug 03, 2015 at 07:13:31PM -0700, Guenter Roeck wrote:
> The watchdog infrastructure now supports handling watchdog keepalive
> if the watchdog is running while the watchdog device is closed.
> Convert the driver to use this infrastructure.
> 
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
>  drivers/watchdog/imx2_wdt.c | 72 ++++++++-------------------------------------

I tested the series on an i.MX27 machine and it works nicely. When the
watchdog is already running at probe time it is constantly pinged until
userspace opens /dev/watchdog. With the patch I sent earlier today the
functionallity is also given, that is the machine resets iff I stop
pinging. And when I do a stopping-close the worker looks for this in
hardware non-stoppable device.

Very nice, and also \o/ for the diffstat,
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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