On Tue, 22 Jun 2021 21:54:31 +0200, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > If it's blacklisted here, what driver does control this device? On my machine, no other device driver takes control. The `usbcore` driver loads the `cdc-acm` driver because the descriptors match but after cdc-acm returns without claiming the interfaces, no other driver is probed AFAICT. I've written an incomplete driver myself; I'll see if I can publish it later. But the traffic is just USB bulk messages and should be doable in userspace without a driver. Sadly the devices are not very common and the USB traffic is undocumented. Best, Hannu
