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

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Message-ID: <CADyBb7snhcR43KT_xrFipBH3PBNBfj39-hE-mSjJ3vMb7Ehp+A@mail.gmail.com>
Date:	Mon, 25 May 2015 00:52:45 +0800
From:	Fu Wei <fu.wei@...aro.org>
To:	Timur Tabi <timur@...eaurora.org>
Cc:	Guenter Roeck <linux@...ck-us.net>,
	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

Hi Timur

On 25 May 2015 at 00:44, Timur Tabi <timur@...eaurora.org> wrote:
> 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.

I don't know why you want to do this tricky way.  you can always
register the interrupt handler,
if pre-timeout is 0, system will just trigger WS1 right after WS0


>
>
> --
> 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.



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
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