How do I debug lsusb UNRECOGNIZED errors?

Hi,

I recently got a bug report that included some lsusb -v output
for a Blackberry Pearl that went like this:

         UNRECOGNIZED:  f0 b3 99 e0 27 eb 69 cc cd 04 33 bb 4f e2 f3
e0 00 8b c0 1a 11 00 00 00 d8 d1 05 08 01 00 00 00 90 55 cc dc 21 00
00 00 09 04 00 00 04 ff 01 ff 02 56 5c 4f f8 d1 05 08 00 00 00 00 00
00 00 00 70 d7 e8 53 59 00 00 00 07 05 81 02 40 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 07 05 02 02 40 00 00 00 00 00 00 00 50 d2 05
08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e7
ff c6 93 f9 00 00 00 f0 b3 99 e0 27 eb 69 cc cd 04 33 bb 4f e2 f3 e0
00 8b c0 1a 11 00 00 00 d8 d1 05 08 01 00 00 00 90 55 cc dc 21 00 00
00 09 04 00 00 04 ff 01 ff 02 56 5c 4f f8 d1 05 08 00 00 00 00 00 00
00 00 70 d7 e8 53 59 00 00 00 07 05 81 02 40 00 00 00
       Endpoint Descriptor:
         bLength                 0
         bDescriptorType         0
         bEndpointAddress     0x00  EP 0 OUT
         bmAttributes            0
           Transfer Type            Control
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0000  1x 0 bytes
         bInterval               0
       Endpoint Descriptor:
         bLength                 0
         bDescriptorType         0
         bEndpointAddress     0x00  EP 0 OUT
         bmAttributes            0
           Transfer Type            Control
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0000  1x 0 bytes
         bInterval               0


How do I go about debugging this?  To my knowledge, the kernel talks
to the device as soon as it is plugged in, and something like usbfs_snoop
won't help me here.

Any tips?

Thanks,
- Chris


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