Change to usb_drv? (17.11 -> 18.05)

Hi All:

One of my components that handles a USB device was working in 17.11 (x86_32, nova), but is causing problems when I attempt to run it in 18.05. The device is an FTDI-based USB-GPIO adapter (FT232H chip), along with a port of libftdi.

The USB hub setup seems to work, but the FTDI setup generates an error in the log "ftdi_usb_reset failed", occurring when libusb_control_transfer() fails during a USB reset.

There is a similar sounding issue mentioned in the release notes regarding usb_block_drv. Might it be the same? If so, has this been resolved in some general way?

Thank you for any input, Steven