Re: [PATCH v2 5/9] watchdog: msc313e: Fix spurious reset on suspend

[Guenter Roeck]

On Sat, Aug 29, 2026 at 12:13:44AM +0800, Tzung-Bi Shih wrote:
> If the hardware watchdog was started by the bootloader and the device is
> suspended before userspace opens it, the ping worker (from watchdog
> core) is frozen and the active hardware timer continues running.  This
> leads to a spurious system reset.
> 
> Check both watchdog_active() and watchdog_hw_running() when deciding
> whether to start or stop the watchdog during suspend and resume.
> 
> Additionally, call watchdog_stop_ping_on_suspend() to ensure the ping
> worker be correctly paused and restarted during suspend and resume.
> 
> Fixes: ffd264bd152c ("watchdog: msc313e: Check if the WDT was running at boot")
> Signed-off-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>

Applied.

Sashiko has a point about the bug in the watchdog core, though. We'll have
to fix that at some point.

Thanks,
Guenter