Drive continues to spin down and spin back up

[Sean Bruno]

Was using this drive with -current today and noticed that it seems to
spin down into power save and back up again a lot.  When its not being
used, it tried to go into power save, but since it is mounted, it keeps
getting spun back up.  Is there a quirk for this somewhere?

ugen1.3: <Iomega HDD Iomega HDD> at usbus1, cfg=0 md=HOST spd=HIGH
(480Mbps) pwr=ON (500mA)

<repeats over and over>
(da0:umass-sim0:0:0:0): lost device - 0 outstanding, 3 refs
(pass3:umass-sim0:0:0:0): lost device
(pass3:umass-sim0:0:0:0): removing device entry
(da0:umass-sim0:0:0:0): removing device entry
ugen1.3: <Iomega HDD> at usbus1
umass0: <Interface0> on usbus1
umass0:  SCSI over Bulk-Only; quirks = 0x0100
umass0:3:0:-1: Attached to scbus3
pass3 at umass-sim0 bus 0 scbus3 target 0 lun 0
pass3: <External RAID 0> Fixed Direct Access SCSI-4 device 
pass3: Serial Number ABCDEF0123456847
pass3: 40.000MB/s transfers
GEOM: new disk da0
da0 at umass-sim0 bus 0 scbus3 target 0 lun 0
da0: <External RAID 0> Fixed Direct Access SCSI-4 device 
da0: Serial Number ABCDEF0123456847
da0: 40.000MB/s transfers
da0: 953869MB (1953525168 512 byte sectors: 255H 63S/T 121601C)
da0: quirks=0x2<NO_6_BYTE>
da0: Delete methods: <NONE(*)>

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