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SubjectiRiver H100 series and usb-storage issues
From
Date
Lads,

I've had a discussion with Matthew Dharm
<mdharm-usb@one-eyed-alien.net> on the Linux-usb mailing list
<linux-usb-users@lists.sourceforge.net> and I'm taking the topic
here...

Mailing list threads:

http://marc.theaimsgroup.com/?l=linux-usb-users&m=108329645220736&w=2
http://marc.theaimsgroup.com/?l=linux-usb-users&m=108332081125990&w=2
http://marc.theaimsgroup.com/?l=linux-usb-users&m=108370356206121&w=2

Here's the problem:

The iRiver H100 series MP3 players work with linux, but quite
unreliably. By unreliable, I mean that repetitively md5sum'ing the
files on the device yield different results:

find <mountpoint> -type f -print0 | sort -z | xargs -r0 md5sum > sums.1
find <mountpoint> -type f -print0 | sort -z | xargs -r0 md5sum > sums.2
diff sums.1 sums.2

will dump a bunch of diffs. Bad, bad, bad...

With vanilla 2.4.26, these kernel messages are issued and an I/O error
is returned to user space:

USB Mass Storage device found at 18
SCSI disk error : host 1 channel 0 id 0 lun 0 return code = 8000000
Current sd08:21: sense key None
I/O error: dev 08:21, sector 2225382

The sector numbers change all the time... Retrying a faulty sector
will give a good result.

After recompiling with debug message, here are the messages before and
during the error (2.4.26 too):

usb-storage: queuecommand() called
usb-storage: *** thread awakened.
usb-storage: Command READ_10 (10 bytes)
usb-storage: 28 00 01 e5 1f 5c 00 00 01 00 00 00
usb-storage: Bulk command S 0x43425355 T 0x944 Trg 0 LUN 0 L 512 F 128 CL 10
usb-storage: Bulk command transfer result=0
usb-storage: usb_stor_transfer_partial(): xfer 512 bytes
usb-storage: usb_stor_bulk_msg() returned 0 xferred 512/512
usb-storage: usb_stor_transfer_partial(): transfer complete
usb-storage: Bulk data transfer result 0x0
usb-storage: Attempting to get CSW...
usb-storage: Bulk status result = 0
usb-storage: Bulk status Sig 0x53425355 T 0x944 R 0 Stat 0x0
usb-storage: scsi cmd done, result=0x0
usb-storage: *** thread sleeping.
usb-storage: queuecommand() called
usb-storage: *** thread awakened.
usb-storage: Command READ_10 (10 bytes)
usb-storage: 28 00 00 a3 e9 21 00 00 01 00 00 00
usb-storage: Bulk command S 0x43425355 T 0x945 Trg 0 LUN 0 L 512 F 128 CL 10
usb-storage: Bulk command transfer result=0
usb-storage: usb_stor_transfer_partial(): xfer 512 bytes
usb-storage: usb_stor_bulk_msg() returned 0 xferred 0/512
usb-storage: Bulk data transfer result 0x1
usb-storage: Attempting to get CSW...
usb-storage: clearing endpoint halt for pipe 0xc0011e80
usb-storage: usb_stor_clear_halt: result=0
usb-storage: Attempting to get CSW (2nd try)...
usb-storage: Bulk status result = 0
usb-storage: Bulk status Sig 0x53425355 T 0x945 R 512 Stat 0x0
usb-storage: -- unexpectedly short transfer
usb-storage: Issuing auto-REQUEST_SENSE
usb-storage: Bulk command S 0x43425355 T 0x946 Trg 0 LUN 0 L 18 F 128 CL 6
usb-storage: Bulk command transfer result=0
usb-storage: usb_stor_transfer_partial(): xfer 18 bytes
usb-storage: usb_stor_bulk_msg() returned 0 xferred 18/18
usb-storage: usb_stor_transfer_partial(): transfer complete
usb-storage: Bulk data transfer result 0x0
usb-storage: Attempting to get CSW...
usb-storage: Bulk status result = 0
usb-storage: Bulk status Sig 0x53425355 T 0x946 R 0 Stat 0x0
usb-storage: -- Result from auto-sense is 0
usb-storage: -- code: 0x70, key: 0x0, ASC: 0x0, ASCQ: 0x0
usb-storage: No Sense: no additional sense information
usb-storage: scsi cmd done, result=0x0
usb-storage: *** thread sleeping.
SCSI disk error : host 1 channel 0 id 0 lun 0 return code = 8000000
Current sd08:21: sense key None
I/O error: dev 08:21, sector 10741986

When using vanilla 2.6.5, I get no I/O errors, but the md5 diffs are
still generated, so there is still something wrong...

Apparently, the problem is that the device posts an empty reply to a
valid query (save an bug in linux, which I could not pinpoint (yet?)).

I have tried running the device on different computers with different
USB chipsets, and I could reproduce the problem every time.

I am posting here to see if anyone can provide any debugging help or
other clues before I call it quit.

Thanks,
Phil.
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