Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 3 Apr 2013 08:50:26 -0700 | From | Guenter Roeck <> | Subject | Re: [PATCH v3 2/2] watchdog: fix w83627hf_wdt clear timeout expired |
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On Wed, Apr 03, 2013 at 08:06:59AM -0700, Tony Chung wrote: > On Tue, Apr 2, 2013 at 9:21 PM, Guenter Roeck <linux@roeck-us.net> wrote: > > > > > > > What is the exact chip type in your system ? I want to have a look into the > > datasheet; maybe I can find out how it can trigger without causing a reset. > > Winbond 83627HF chip > > I believe BIOS has watchdog disabled otherwise it would have reboot the box. > However, the timer just start counting. > > Comparing to ipmi_watchdog, you can do this: > modprobe ipmi_watchdog ... start_now=0 ...action=<> nowayout=1 > > So it is possible to load the driver without start counting. > That is a different driver, though. you don't have the start_now option here.
> Notice it is an else, so t is actually 0 already (i.e. expired or > never start running):
Still no idea why that would cause the system to reboot when you reset the trigger without setting t to 0 again (or why the system doesn't reset in the first place if the watchdog already triggered).
I am not really sure what the best approach is here, so let's leave it up to the maintainer to decide which way to go.
Thanks, Guenter
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