linux-kernel - Re: [PATCH v10 3/3] watchdog: make the device time out at open_deadline when open

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Message-ID: <e63a0468-656f-0a8d-45a8-5236c42942b1@roeck-us.net>
Date:   Fri, 14 Jun 2019 05:37:57 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Rasmus Villemoes <rasmus.villemoes@...vas.dk>
Cc:     "linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Jonathan Corbet <corbet@....net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        Esben Haabendal <esben@...bendal.dk>,
        Jerry Hoemann <jerry.hoemann@....com>,
        Rasmus Villemoes <Rasmus.Villemoes@...vas.se>
Subject: Re: [PATCH v10 3/3] watchdog: make the device time out at
 open_deadline when open_timeout is used

On 6/14/19 1:41 AM, Rasmus Villemoes wrote:
> On 07/06/2019 20.38, Guenter Roeck wrote:
>> On Wed, Jun 05, 2019 at 02:06:44PM +0000, Rasmus Villemoes wrote:
>>> When the watchdog device is not open by userspace, the kernel takes
>>> care of pinging it. When the open_timeout feature is in use, we should
>>> ensure that the hardware fires close to open_timeout seconds after the
>>> kernel has assumed responsibility for the device.
>>>
>>> To do this, simply reuse the logic that is already in place for
>>> ensuring the same thing when userspace is responsible for regularly
>>> pinging the device:
>>>
>>> - When watchdog_active(wdd), this patch doesn't change anything.
>>>
>>> - When !watchdoc_active(wdd), the "virtual timeout" should be taken to
>>
>> s/watchdoc_active/watchdog_active/
>>
>> otherwise
>>
>> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
> 
> Thanks! Wim, can you fix up if/when applying, or do you prefer I resend?
> 

I made the change when applying the patch to my watchdog-next branch,
and Wim usually picks up patches from there, so we should be good.

Thanks,
Guenter