On Mon, 2020-03-23 at 07:52 +0100, Greg KH wrote: > So it sounds like you have the wrong device type. What makes it sound that way to you? The priv->chip_type is returning 8 which according to the ftdi_chip_type enum in ftdi_sio.h is the case for FT232H. My layperson understanding of that would say that the chip_type is being detected correctly. I want to be clear, I do not think your wrong. Clearly I am wrong and drawing the wrong conclusion. I am just trying to understand how you know I am getting the wrong device type because it is not obvious to me. > Can you make sure you use the latest kernel release (5.5) and if you > have problems with this, email the linux-usb mailing list as the > driver maintainers for that driver are there. I am cloning the kernel source now and am going to start compiling it shortly.