/sys/bus/usb/drivers/hub/2-0%3A1.0/subsystem/devices/1-0%3A1.0/usb_endpoint%3Ausbdev1.1_ep81/device/driver/

../
1-0:1.0/
2-0:1.0/
bind         4096
module/
new_id       4096
unbind       4096