* [PATCH] watchdog: wdat_wdt: Ping the watchdog on resume
@ 2016-10-20 15:03 Mika Westerberg
2016-10-20 15:05 ` Rafael J. Wysocki
2016-10-20 22:19 ` Guenter Roeck
0 siblings, 2 replies; 7+ messages in thread
From: Mika Westerberg @ 2016-10-20 15:03 UTC (permalink / raw)
To: linux-watchdog-u79uwXL29TY76Z2rM5mHXA
Cc: Wim Van Sebroeck, Guenter Roeck, Rafael J. Wysocki,
Mika Westerberg, linux-acpi-u79uwXL29TY76Z2rM5mHXA
It turns out we need to ping the watchdog hardware on resume when we
re-program it. Otherwise this results inadvertent reset to trigger right
after the resume is completed.
Signed-off-by: Mika Westerberg <mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
drivers/watchdog/wdat_wdt.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/watchdog/wdat_wdt.c b/drivers/watchdog/wdat_wdt.c
index e473e3b23720..6d1fbda0f461 100644
--- a/drivers/watchdog/wdat_wdt.c
+++ b/drivers/watchdog/wdat_wdt.c
@@ -499,6 +499,10 @@ static int wdat_wdt_resume_noirq(struct device *dev)
ret = wdat_wdt_enable_reboot(wdat);
if (ret)
return ret;
+
+ ret = wdat_wdt_ping(&wdat->wdd);
+ if (ret)
+ return ret;
}
return wdat_wdt_start(&wdat->wdd);
--
2.9.3
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^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH] watchdog: wdat_wdt: Ping the watchdog on resume
2016-10-20 15:03 [PATCH] watchdog: wdat_wdt: Ping the watchdog on resume Mika Westerberg
@ 2016-10-20 15:05 ` Rafael J. Wysocki
[not found] ` <CAJZ5v0ipdO2psmdesoQuw_5uuOSqDh22DK04bEJTi1pW0fL53g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-20 22:19 ` Guenter Roeck
1 sibling, 1 reply; 7+ messages in thread
From: Rafael J. Wysocki @ 2016-10-20 15:05 UTC (permalink / raw)
To: Mika Westerberg
Cc: linux-watchdog@vger.kernel.org, Wim Van Sebroeck, Guenter Roeck,
Rafael J. Wysocki, ACPI Devel Maling List
On Thu, Oct 20, 2016 at 5:03 PM, Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
> It turns out we need to ping the watchdog hardware on resume when we
> re-program it. Otherwise this results inadvertent reset to trigger right
> after the resume is completed.
>
> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Is there a Fixes: tag missing here?
> ---
> drivers/watchdog/wdat_wdt.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/watchdog/wdat_wdt.c b/drivers/watchdog/wdat_wdt.c
> index e473e3b23720..6d1fbda0f461 100644
> --- a/drivers/watchdog/wdat_wdt.c
> +++ b/drivers/watchdog/wdat_wdt.c
> @@ -499,6 +499,10 @@ static int wdat_wdt_resume_noirq(struct device *dev)
> ret = wdat_wdt_enable_reboot(wdat);
> if (ret)
> return ret;
> +
> + ret = wdat_wdt_ping(&wdat->wdd);
> + if (ret)
> + return ret;
> }
>
> return wdat_wdt_start(&wdat->wdd);
> --
Thanks,
Rafael
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH] watchdog: wdat_wdt: Ping the watchdog on resume
2016-10-20 15:03 [PATCH] watchdog: wdat_wdt: Ping the watchdog on resume Mika Westerberg
2016-10-20 15:05 ` Rafael J. Wysocki
@ 2016-10-20 22:19 ` Guenter Roeck
2016-10-20 22:47 ` Rafael J. Wysocki
1 sibling, 1 reply; 7+ messages in thread
From: Guenter Roeck @ 2016-10-20 22:19 UTC (permalink / raw)
To: Mika Westerberg
Cc: linux-watchdog, Wim Van Sebroeck, Rafael J. Wysocki, linux-acpi
On Thu, Oct 20, 2016 at 06:03:36PM +0300, Mika Westerberg wrote:
> It turns out we need to ping the watchdog hardware on resume when we
> re-program it. Otherwise this results inadvertent reset to trigger right
> after the resume is completed.
>
> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
[ assuming Rafael is going to pick it up ]
Guenter
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] watchdog: wdat_wdt: Ping the watchdog on resume
2016-10-20 22:19 ` Guenter Roeck
@ 2016-10-20 22:47 ` Rafael J. Wysocki
0 siblings, 0 replies; 7+ messages in thread
From: Rafael J. Wysocki @ 2016-10-20 22:47 UTC (permalink / raw)
To: Guenter Roeck
Cc: Mika Westerberg, linux-watchdog@vger.kernel.org, Wim Van Sebroeck,
Rafael J. Wysocki, ACPI Devel Maling List
On Fri, Oct 21, 2016 at 12:19 AM, Guenter Roeck <linux@roeck-us.net> wrote:
> On Thu, Oct 20, 2016 at 06:03:36PM +0300, Mika Westerberg wrote:
>> It turns out we need to ping the watchdog hardware on resume when we
>> re-program it. Otherwise this results inadvertent reset to trigger right
>> after the resume is completed.
>>
>> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
>
> Acked-by: Guenter Roeck <linux@roeck-us.net>
>
> [ assuming Rafael is going to pick it up ]
I am, thanks!
Rafael
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2016-10-21 12:58 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
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2016-10-20 15:03 [PATCH] watchdog: wdat_wdt: Ping the watchdog on resume Mika Westerberg
2016-10-20 15:05 ` Rafael J. Wysocki
[not found] ` <CAJZ5v0ipdO2psmdesoQuw_5uuOSqDh22DK04bEJTi1pW0fL53g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-20 15:17 ` Mika Westerberg
2016-10-20 15:48 ` Rafael J. Wysocki
2016-10-21 12:52 ` Mika Westerberg
2016-10-20 22:19 ` Guenter Roeck
2016-10-20 22:47 ` Rafael J. Wysocki
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