I need help too. the controller chip is iocell 2515pro.
# lsusb
Bus 001 Device 025: ID 067b:2517 Prolific Technology, Inc. Flash Disk Mass Storage Device
Bus 001 Device 024: ID 067b:2517 Prolific Technology, Inc. Flash Disk Mass Storage Device
Bus 001 Device 023: ID 067b:2515 Prolific Technology, Inc. Flash Disk Embedded Hub
Thanks!