The disk in question is VID/PID=0b86:5110 32mb JMTek/eXputer disk.
http://www.qbik.ch/usb/devices/showdev.php?id=1092 says it can
never be supported through usb-storage because it claims to be
usb storage compliant but is not.

I accidentally plugged this beast not remembering what a royal PITA
it is; here's the output from dmesg:

USB Mass Storage support registered.
sr0: mmc-3 profile: 0h
sr0: mmc-3 profile: 0h
usb.c: deregistering driver usb-storage
usb.c: USB disconnect on device 00:0e.1-2 address 9
sr0: mmc-3 profile: 0h
sr0: mmc-3 profile: 0h
hub.c: new USB device 00:0e.1-2, assigned address 10
usb.c: USB device 10 (vend/prod 0xb86/0x5110) is not claimed by any 
active driver.
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
scsi1 : SCSI emulation for USB Mass Storage devices
usb.c: USB disconnect on device 00:0e.1-2 address 10
sr0: mmc-3 profile: 0h
sr0: mmc-3 profile: 0h
usb-uhci.c: interrupt, status 3, frame# 999
hub.c: new USB device 00:0e.1-2, assigned address 11
scsi: device set offline - not ready or command retry failed after bus 
reset: host 1 channel 0 id 0 lun 0
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 10
USB Mass Storage support registered.
scsi2 : SCSI emulation for USB Mass Storage devices
sr0: mmc-3 profile: 0h
sr0: mmc-3 profile: 0h
usb-uhci.c: interrupt, status 3, frame# 1912
usb-uhci.c: interrupt, status 3, frame# 775
usb-uhci.c: interrupt, status 3, frame# 1689
usb-uhci.c: interrupt, status 3, frame# 555
usb-uhci.c: interrupt, status 3, frame# 1470
usb-uhci.c: interrupt, status 3, frame# 335
usb-uhci.c: interrupt, status 3, frame# 1248
usb-uhci.c: interrupt, status 3, frame# 115
usb-uhci.c: interrupt, status 3, frame# 1029
usb-uhci.c: interrupt, status 3, frame# 1941

Unplug the device and try /sbin/rmmod usb-sotrage == panic ;(
So I decided to find a way of blacklisting this disk (and
maybe similar others).  Please review the attached patch.

If there's any other way of preventing usb-storage to take-
over this disk, then tell me and despise my ignorance,
Otherwise, Marcelo please apply ;)

Ozkan Sezer