From owner-freebsd-scsi@FreeBSD.ORG  Wed Feb 21 23:07:19 2007
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Date: Wed, 21 Feb 2007 16:05:42 -0700 (MST)
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From: "M. Warner Losh" <imp@bsdimp.com>
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Subject: Quirk for this?
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I have a umass device that lies about the size of the device:

umass0: <SanDisk Corporation ImageMate CompactFlash USB, class 0/0, rev 1.10/0.09, addr 2> on uhub1
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <SanDisk ImageMate II 1.30> Removable Direct Access SCSI-2 device 
da0: 1.000MB/s transfers
da0: 61MB (125441 512 byte sectors: 64H 32S/T 61C)

However, when I plug it in with other umass devices, this is what I
see:

umass0: <SanDisk ImageMate 14 in 1 Reader/Writer, class 0/0, rev 2.00/93.39, addr 2> on uhub2
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <Generic STORAGE DEVICE 9339> Removable Direct Access SCSI-0 device 
da0: 40.000MB/s transfers
da0: 61MB (125440 512 byte sectors: 64H 32S/T 61C)

The 125440 number is what is reported by ata as well.

Is there some way I can quirk this to not get a huge cascade of errors
when the last sector is read by the tasting code?  I didn't see any
way when I was reading the code, but the quirks are scatter in a few
different files and I might have missed something.

Warner