> Hi Gerd,
> 
> sorry for the delays, I tested the latest pulled patch queue and it's
> now fine on my Intel board, too. The dongle gets detected again without
> assertions. Thanks for your work.
> 
> Still remaining are the multiple usb resets on host side before the
> dongle gets finally detected / usable on the guest.

Can you try if the attached patch makes a difference?

thanks,
  Gerd