Re: [PATCH] PM: sleep: Add DPM watchdog to late/early/noirq phases

[Tzung-Bi Shih]

On Fri, Aug 21, 2026 at 10:06:48AM -0700, Mayank Rungta wrote:
> Extend the DPM watchdog to wrap device_suspend_late, device_suspend_noirq,
> device_resume_early, and device_resume_noirq callbacks. If a driver hangs
> during these transitions, the watchdog will fire and dump a stack trace
> to help identify the offending driver.
> 
> To prevent false-positive timeouts, the watchdog is set only after
> waiting for subordinate (during suspend) and superior (during resume)
> devices.
> 
> Signed-off-by: Mayank Rungta <mrungta@xxxxxxxxxx>

Reviewed-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>