2.6.20-rc6 SCSI error: I/O error - trouble with mass storage devices ?!

Dear all,

I am trying to use a P990 phone in via mass storage under linux. I was
able to copy data to/from the phone without trouble under winxp but
receive millions of I/O errors (see below (*), basically on any sector).
As this was also happening on a casio camera (and working on winxp) I
tried a couple of things to nail this down:

1) I removed the ehci module (the P990's mass storage device seems to be
usb1.1 anyway, the casio cam has USB2) such that the UHCI module takes
over => same errors

2) I disabled all the as EXPERIMENTAL marked features under USB support,
i.e. Full speed ISO transactions, Root Hub Transaction Translators,
Improved Transaction Translator scheduling and USB selective
suspend/resume and wakeup => same errors

3) Tried with a sandisk 2G memory stick -> no problems at all

4) I enabled usb mass storage verbose debug output and collected 2 runs
of I/O once with the sandisk and one with the P990 (attached as sandisk
and p990)

5) ran a complete scandisk / check sectors under winxp  -> no problems

6) I tried on a completely different machine running 2.6.19.2 but still
got the same results.

Now I am clueless what could have gone wrong (as I *think* this was all
working at some point at least before firmware updates) and what the
difference between these mass storage devices is.

(*)
usb-storage: device scan complete
scsi 4:0:0:0: Direct-Access              P990i            1.0  PQ: 0 ANSI: 0
SCSI device sdb: 3995272 512-byte hdwr sectors (2046 MB)
sdb: Write Protect is off
sdb: Mode Sense: 03 00 00 00
sdb: assuming drive cache: write through
SCSI device sdb: 3995272 512-byte hdwr sectors (2046 MB)
sdb: Write Protect is off
sdb: Mode Sense: 03 00 00 00
sdb: assuming drive cache: write through
 sdb:
sd 4:0:0:0: Attached scsi removable disk sdb
sd 4:0:0:0: Attached scsi generic sg2 type 0
sd 4:0:0:0: SCSI error: return code = 0x10070000
end_request: I/O error, dev sdb, sector 7
Buffer I/O error on device sdb, logical block 7
lost page write due to I/O error on sdb
Buffer I/O error on device sdb, logical block 8
lost page write due to I/O error on sdb
Buffer I/O error on device sdb, logical block 9
lost page write due to I/O error on sdb
Buffer I/O error on device sdb, logical block 10
lost page write due to I/O error on sdb
Buffer I/O error on device sdb, logical block 11
lost page write due to I/O error on sdb
[...]
sd 4:0:0:0: SCSI error: return code = 0x10070000
end_request: I/O error, dev sdb, sector 434937
sd 4:0:0:0: SCSI error: return code = 0x10070000
end_request: I/O error, dev sdb, sector 435177
sd 4:0:0:0: SCSI error: return code = 0x10070000
end_request: I/O error, dev sdb, sector 435417
sd 4:0:0:0: SCSI error: return code = 0x10070000
end_request: I/O error, dev sdb, sector 435657
sd 4:0:0:0: SCSI error: return code = 0x10070000
end_request: I/O error, dev sdb, sector 1411257
sd 4:0:0:0: SCSI error: return code = 0x10070000
end_request: I/O error, dev sdb, sector 1411497
sd 4:0:0:0: SCSI error: return code = 0x10070000


Any ideas,
Soeren
-- 
Sometimes, there's a moment as you're waking, when you become aware of
the real world around you, but you're still dreaming.

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