USB FlashLink CF card reader on 5.0 RELEASE

[Vincent]

Hi.  I bought a SimpleTech FlashLink UCF-100 compact flash card reader
because they claimed it was mass storage compliant, but it does not
seem to work under FreeBSD.  I tested on the RELEASE kernel and the on
the 5.0-RELEASE-p7 kernel.  It reports the following entries in the
system log with a bunch of the duplicate entries clipped.

<log>

kernel: umass0: USB Mass Storage, rev 1.10/1.13, addr 3
kernel: umass0: Get Max Lun not supported (STALLED)
kernel: umass0: BBB reset failed, IOERROR
kernel: umass0: BBB bulk-in clear stall failed, IOERROR
kernel: umass0: BBB bulk-out clear stall failed, IOERROR
kernel: umass0: BBB reset failed, IOERROR
kernel: umass0: BBB bulk-in clear stall failed, IOERROR
kernel: umass0: BBB bulk-out clear stall failed, IOERROR
kernel: umass0: BBB reset failed, IOERROR
.
.
kernel: (da0:umass-sim0:0:0:0): got CAM status 0x4
kernel: (da0:umass-sim0:0:0:0): fatal error, failed to attach to device
kernel: (da0:umass-sim0:0:0:0): lost device
kernel: umass0: BBB reset failed, IOERROR
kernel: umass0: BBB bulk-in clear stall failed, IOERROR
kernel: umass0: BBB bulk-out clear stall failed, IOERROR
.
.
kernel: (da0:umass-sim0:0:0:0): removing device entry
kernel: Opened disk da0 -> 5

</log>

Device da0 never appears in the device directory.  Any help would be 
appreciated.  I have a SanDisk CF card reader which works just fine with 
the same CF card plugged into it.  

Regards,
Vincent