On Wed, 14 Jan 2004, jjluza wrote:

> > I just looked back at your original problem report, and I saw this in your 
> > log file:
> > 
> > Jan  9 06:34:05 client kernel: usb-storage: Command WRITE_10 (10 bytes)
> > Jan  9 06:34:05 client kernel: usb-storage:  2a 00 00 4f 09 57 00 00 80 00
> > Jan  9 06:34:05 client kernel: usb-storage: Bulk Command S 0x43425355 T 0x14ea L 
> > 65536 F 0 Trg 0 LUN 0 CL 10
> > Jan  9 06:34:05 client kernel: usb-storage: usb_stor_bulk_transfer_buf: xfer 31 
> > bytes
> > Jan  9 06:34:05 client kernel: usb-storage: Status code 0; transferred 31/31
> > Jan  9 06:34:05 client kernel: usb-storage: -- transfer complete
> > Jan  9 06:34:05 client kernel: usb-storage: Bulk command transfer result=0
> > Jan  9 06:34:05 client kernel: usb-storage: usb_stor_bulk_transfer_sglist: xfer 
> > 65536 bytes, 16 entries
> > Jan  9 06:34:30 client kernel: usb 1-3: control timeout on ep0in
> > Jan  9 06:34:35 client kernel: usb 1-3: control timeout on ep0in
> > 
> > What on earth are these messages doing here?  1-3 is the usb-storage 
> > device in question.  There shouldn't be any control transfers going on at 
> > this point, only the bulk-out transfer.  This looks very strange...
> > 
> 
> 
> I don't understand these messages so I can't answer you ;)
> I enable verbose scsi, verbose usb and verbose usb-storage
> I load modules sd_mod and usb-storage, and ehci is compiled in.

The questions were really meant for other readers on the USB development 
list; I didn't expect you to have the answers.

> > Do you see this same sort of thing in the log with max_sectors set to 16?
> 
> 
> Yes
> 
> 
> > Just for kicks, see what happens when you set max_sectors to 2. (!)
> 
> 
> You can find it here :
> http://jjluza.free.fr/log_new(with_max_sectors_is_2).txt
> It seems that the messages are nearly the same.

Yes.  And in fact, the block layer won't let max_sectors get any smaller 
than 8.  But changing it doesn't seem to have improved anything.

> > Also, I can't remember if you've already posted this information.  Could 
> > you send the output from lsusb, or else the contents of 
> > /proc/bus/usb/devices, with your drive plugged in?
> 
> 
> Yes, I have already posted it. You can find all file I posted here :
> http://jjluza.free.fr/
> You can find contents of /proc/bus/usb/devices here :
> http://jjluza.free.fr/infos_usbstorage.txt
> with other informations about the bad device
> 
> I hope these information can help you to find a solution  ;)

I looked, but I don't see any clear answer.  These Genesys Logic devices 
have weird problems that nobody really seems to understand.

Alan Stern



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