Re: [PATCH v2 0/2] thunderbolt: Fix S4 resume incongruities

[Mario Limonciello (AMD) (kernel.org)]

On 1/17/2026 10:57 AM, Katiyar, Pooja wrote:

> > I have confirmation the hack patch does help the issue for us too.
> >
> > If your patch doesn't work another logical solution could be to destroy
> > all the tunnels as part of the PM freeze callback (not just the DP
> > resources).  Maybe even unify the suspend and freeze codepaths for more
> > opportunities for code reuse?
>
> Thanks for confirming the hack patch helps!
>
> We are actually working on a solution that releases the DP resources and
> suspends the switch as part of the freeze sequence. This way the hibernation
> image that is stored doesn't contain any active tunnels, and during resume
> we get a DP hotplug notification for a new tunnel, similar to S5. So far
> this patch is working fine but is under review.

Thanks.  If you want early testing from us too before you're ready to 
post publicly feel free to ping it offline to me too.

Thanks,