linux-kernel - Re: [PATCH 3/8] watchdog: Introduce WDOG

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Message-ID: <20150804154104.GT9999@pengutronix.de>
Date:	Tue, 4 Aug 2015 17:41:04 +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>,
	kernel@...gutronix.de
Subject: Re: [PATCH 3/8] watchdog: Introduce WDOG_RUNNING flag

Hello,

On Mon, Aug 03, 2015 at 07:13:29PM -0700, Guenter Roeck wrote:
> The WDOG_RUNNING flag is expected to be set by watchdog drivers if
> the hardware watchdog is running. If the flag is set, the watchdog
> subsystem will ping the watchdog even if the watchdog device is closed.
> 
> The watchdog driver stop function is now optional and may be omitted
> if the watchdog can not be stopped. If stopping the watchdog is not
> possible but the driver implements a stop function, it is responsible
> to set the WDOG_RUNNING flag in its stop function.
> 
> Cc: Timo Kokkonen <timo.kokkonen@...code.fi>
> Cc: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
>  Documentation/watchdog/watchdog-kernel-api.txt | 19 ++++++++-----
>  drivers/watchdog/watchdog_core.c               |  2 +-
>  drivers/watchdog/watchdog_dev.c                | 39 ++++++++++++++++++++------
>  include/linux/watchdog.h                       |  7 +++++
>  4 files changed, 50 insertions(+), 17 deletions(-)
Another thing that I noticed just now after looking at a later patch in
this series: Conceptually that worker stuff better fits into
watchdog_core.c than watchdog_dev.c, doesn't it? But maybe this
separation doesn't make sense anyhow?

Best regards
Uwe

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