[Bug 262882] [13.1-RC5] usb disconnects repeatedly, losing all attached devices on that USB hub

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262882

--- Comment #81 from Hans Petter Selasky <hselasky@FreeBSD.org> ---
Hi Glen:

After several hours of debugging with Emmanuel today, I found two issues which
fixed his USB problems. I plan to merge these as soon as possible to 13-stable
and ask for MFC to 13.1 aswell. I will ask the people subscribed there to test
those patches. They will apply cleanly on top of 13-stable and 13.1, so just do
git cherry-pick xxxxx .

The problems are due to different XHCI firmware designs from what I can see,
not so easy to know about.

--HPS

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