Comment # 29 on bug 1042933 from Thomas Blume

(In reply to Jerry Hoemann from comment #28)
>
> For HPE hpwdt, the ASR is disabled by writing the "magic" close to
> /dev/watchdog:
>       E.g:  echo V > /dev/watchdog.
> 
> Re-opening /dev/watchdog will start the timer again.
> 
> The hpwdt driver doesn't separate the pretimeout feature from ASR feature. 
> So there is no way a user can turn off just the pretimeout NMI and leave the
> ASR feature enabled.
> 
> Documentation/watchdog/watchdog-api.txt describes in greater detail both the
> magic close and the pretimeout feature.

Thanks for the information.
Now I can adapt my test code accordingly.

->closing