hub.c: new USB device 00:07.2-1, assigned address 2
scsi1 : SCSI emulation for USB Mass Storage devices
  Vendor: ST310211  Model: A                 Rev: 0811
  Type:   Direct-Access                      ANSI SCSI revision: 02
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
hub.c: new USB device 00:07.2-2, assigned address 3
usb.c: invalid descriptor length of 0
usb.c: unable to get device 3 configuration (error=-22)
hub.c: new USB device 00:07.2-2, assigned address 4
usb.c: invalid descriptor length of 0
usb.c: unable to get device 4 configuration (error=-22)

the chipset is gensys or general