[Bug 221073] xHCI host controller dies on resume from s2idle on AMD Strix Halo [1022:1587]

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221073

--- Comment #36 from Mario Limonciello (AMD) (mario.limonciello@amd.com) ---
> I isolated the issue to the firmware upgrade, downgraded the firmware to
> 20260110 version, and it became like it was before. I don't know whether it's
> a bug, firmware-kernel version compatibility discrepancy, potential
> brokenness of my device manifesting itself, or something else, but I have to
> mention that I used `make localmodconfig` from a 6.19.3 system in order to
> avoid long build times (due to building all the modules) on the slow usb
> stick, and on the laptop in general. 

There was a linux-firmware regression with amdxdna.  If you want to use that
firmware release then you can blacklist it to avoid it.  Otherwise the month
before or the one just tagged will work fine.

> What's weird/interesting is that when I tried to make sure that the issue is
> reproducible after updates and encountered "didn't reach deepest state", I
> still managed to trigger the "HC died" issue -- I did it 2 times and both
> times it took around 30 tries, which is much less frequent than the usual
> state, where I need 3-7 tries. (klog-deepest-state file)

This is actually an interesting data point because it means that hardware sleep
has no bearing on this issue.

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