Unload (rmmod DRIVER_MODULE) or blacklist the actual Linux kernel driver for your device (look it up with lspci -k) and make a list of all files in /dev/ (find /dev >/tmp/before.txt). Load the driver (modprobe DRIVER_MODULE ) and make another list of all files in /dev/ (find /dev >/tmp/after.txt). Compare the two lists (diff /tmp/after.txt /tmp/before.txt) to find the dev-nodes created by that driver.