Workaround 1: "rmmod ehci_hcd" does *not* work, at least with the USB flash key I'm testing with here.
Workaround 2: adding 'irqpoll' kernel parameter *does* work (although there are some odd-looking log messages with this USB key plugged in, see attached dmesg output).
Also confirmed here, dmesg & lspci attached.
Workaround 1: "rmmod ehci_hcd" does *not* work, at least with the USB flash key I'm testing with here.
Workaround 2: adding 'irqpoll' kernel parameter *does* work (although there are some odd-looking log messages with this USB key plugged in, see attached dmesg output).