watchdog: Always return time left until watchdog times out

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The watchdog core knows when the most recent keepalive was sent. It also
knows the configured timeout. With that, it can always calculate and
return the time left until a watchdog times out, even if its driver does
not support it.

Convert watchdog_get_timeleft() into a void function. It never returns an
error after this patch is applied, so the error checks in the calling code
are now pointless and can be removed.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

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Guenter Roeck 2025-11-18 13:04:07 -08:00 • committed by Wim Van Sebroeck

parent 0bf75b9c8a

commit b0fd1f580b

1 changed files with 15 additions and 20 deletions

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drivers/watchdog/watchdog_dev.c

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