USB quirks

[Ralph Zitz]

Hello,
How does one know which quirks to add? At the moment I'm getting the 
following messages when attaching my device:

ugen4.2: <vendor 0x0781> at 
usbus4                                                                                                

umass0: <vendor 0x0781 product 0x5406, class 0/0, rev 2.00/2.00, addr 2> 
on usbus4
umass0:  SCSI over Bulk-Only; quirks = 0x0000
umass0:3:0:-1: Attached to scbus3
(probe0:umass-sim0:0:0:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
(probe0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
(probe0:umass-sim0:0:0:0): SCSI Status: Check Condition
(probe0:umass-sim0:0:0:0): UNIT ATTENTION asc:3a,0
(probe0:umass-sim0:0:0:0): Medium not present
(probe0:umass-sim0:0:0:0): Retrying Command (per Sense Data)
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <SanDisk Cruzer 7.01> Removable Direct Access SCSI-0 device
da0: 40.000MB/s transfers
da0: 15286MB (31306239 512 byte sectors: 255H 63S/T 1948C)
xptioctl: pass driver is not in the kernel
xptioctl: put "device pass" in your kernel config file
(probe0:umass-sim0:0:0:1): TEST UNIT READY. CDB: 0 20 0 0 0 0
(probe0:umass-sim0:0:0:1): CAM Status: SCSI Status Error
(probe0:umass-sim0:0:0:1): SCSI Status: Check Condition
(probe0:umass-sim0:0:0:1): UNIT ATTENTION asc:29,0
(probe0:umass-sim0:0:0:1): Power on, reset, or bus device reset occurred
(probe0:umass-sim0:0:0:1): Retrying Command (per Sense Data)
(probe0:umass-sim0:0:0:1): TEST UNIT READY. CDB: 0 20 0 0 0 0
(probe0:umass-sim0:0:0:1): CAM Status: SCSI Status Error
(probe0:umass-sim0:0:0:1): SCSI Status: Check Condition
(probe0:umass-sim0:0:0:1): NOT READY asc:3a,0
(probe0:umass-sim0:0:0:1): Medium not present
(probe0:umass-sim0:0:0:1): Unretryable error
cd1 at umass-sim0 bus 0 target 0 lun 1
cd1: <SanDisk Cruzer 7.01> Removable CD-ROM SCSI-0 device
cd1: 40.000MB/s transfers
cd1: cd present [49151 x 2048 byte records]
GEOM: da0: media size does not match label.

The usbstick was formatted with fat32. In /dev I have da0 and da0a 
listed, yet neither can be mounted:

sudo mount_msdosfs /dev/da0a /home/ralph/mnt
mount_msdosfs: /dev/da0a: Invalid argument

sudo mount_msdosfs /dev/da0 /home/ralph/mnt
mount_msdosfs: /dev/da0: Invalid argument

I also don't understand the message about the pass device not being in 
the kernel conf - it is.

Any help would be greatly appreciated.

Regards,
Ralph.