linux-kernel - Re: [PATCH v2 6/7] Watchdog: introduce ARM SBSA watchdog driver

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Message-ID: <5561FFF0.5090108@codeaurora.org>
Date:	Sun, 24 May 2015 11:44:32 -0500
From:	Timur Tabi <timur@...eaurora.org>
To:	Guenter Roeck <linux@...ck-us.net>, Fu Wei <fu.wei@...aro.org>
CC:	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>,
	Linaro ACPI Mailman List <linaro-acpi@...ts.linaro.org>,
	linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
	Wei Fu <tekkamanninja@...il.com>,
	G Gregory <graeme.gregory@...aro.org>,
	Al Stone <al.stone@...aro.org>,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Ashwin Chaugule <ashwin.chaugule@...aro.org>,
	Arnd Bergmann <arnd@...db.de>, vgandhi@...eaurora.org,
	wim@...ana.be, Jon Masters <jcm@...hat.com>,
	Leo Duran <leo.duran@....com>, Jon Corbet <corbet@....net>,
	Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v2 6/7] Watchdog: introduce ARM SBSA watchdog driver

Guenter Roeck wrote:

> The current watchdog API suggests that the pretimeout "allows Linux
> to record useful information (like panic information and kernel
> coredumps) before it resets". The call to panic() would be the
> means to make this happen.

Now that I think about it, that does make sense.

However, if a pre-timeout is not set, then the driver should never call 
panic().  That means that the interrupt handler should only be 
registered if sbsa_gwdt_set_pretimeout() is called.

-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the
Code Aurora Forum, hosted by The Linux Foundation.
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