[PATCH] watchdog: make open-close-open functionality a config knob

[Rasmus Villemoes]

On 01/03/2021 16.11, Rasmus Villemoes wrote:
> When the nowayout option is used with a watchdog device, busybox'
> current behaviour of always doing a open/write magic char/close
> sequence before the "real" open causes warning messages in the kernel
> log:
> 
> [   16.212184] watchdog: watchdog0: nowayout prevents watchdog being stopped!
> [   16.212196] watchdog: watchdog0: watchdog did not stop!
> 
> The latter may also appear by itself in case the watchdog is of the
> type that cannot be stopped once started.
> 
> These warnings can be somewhat ominous and distracting, so allow
> configuring whether to use this open-write-close-open sequence rather
> than just open.

ping