Re: umass regression

Looking into this further, I think that the issue is down to Garmin 
devices supplying incorrect information.

In reply to the SCSI INQUIRY command, the HISUP bit is not set. This 
means that single level LUN structure is used (which appears to be all 
that FreeBSD supports anyway). Consequently, the second LUN should be of 
the form:

00 01 00 00 00 00 00 00

Instead, the device reports a second LUN of:

00 00 00 00 00 00 00 01

This is invalid as it uses all four addressing levels, not the single 
level LUN structure.

I think a quirk will be needed here, for example one that ignores the 
list entries and looks at the length of the list only, assuming that for 
a list of length n, the LUNs will be 0, 1, 2, ..., n - 1.

- Bartosz