[Bug 216497] New: USB connections through thunderbolt dock broken

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216497

            Bug ID: 216497
           Summary: USB connections through thunderbolt dock broken
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.19.9-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 15 Sep 2022
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: jhnmlkvch9@gmail.com
        Regression: No

Created attachment 301819
  --> https://bugzilla.kernel.org/attachment.cgi?id=301819&action=edit
dmesg log for thunderbolt dock re-plug

After updating to kernel v5.19.9-arch1-1, usb ports on HP Thunderbolt Dock G2
stopped working. dmesg is getting flooded with the message:

xhci_hcd 0000:30:00.0: Error while assigning device slot ID
xhci_hcd 0000:30:00.0: Max number of devices this xHCI host supports is 64.
usb usb6-port1: couldn't allocate usb_device

Obviously I don't have 64+ devices connected. Strangely, if I boot with the
thunderbolt dock connected, everything works fine. Unplugging and re-plugging
the dock again results in unrecognized usb.

I'm attaching the part of dmesg where I unplug and re-plug the thunderbolt
dock. Note that all usb devices that are connected are correctly enumerated
while unplugging.

Rolling back to previous version of the kernel fixes the issue.

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