Greg KH wrote:
On Mon, Dec 09, 2002 at 03:39:37PM -0800, Greg KH wrote:
Hm, running Linus's latest bk tree with the USB patches results in some
usb-storage errors causing timeouts:
Was this a high speed disk, or a full speed one using a TT?
...
Dec 9 15:22:26 soap kernel: usb-storage: usb_stor_bulk_transfer_sglist(): xfer 65536 bytes, 16 entries
Dec 9 15:22:26 soap kernel: usb-storage: Status code -121; transferred 65037/65536
Dec 9 15:22:26 soap kernel: usb-storage: -- unknown error
That's not a timeout, "-EREMOTEIO" means it got a short read.
In this case, that last packet included only 13 bytes not 512.
(Assuming this was at high speed, otherwise it wasn't the last
one, and that was likely 13 bytes out of 64.)
Dec 9 15:22:26 soap kernel: usb-storage: Bulk data transfer result 0x3
Dec 9 15:22:26 soap kernel: usb-storage: -- transport indicates error, resetting
Dec 9 15:22:26 soap kernel: usb-storage: Bulk reset requested
Dec 9 15:22:32 soap kernel: usb-storage: Soft reset: clearing bulk-in endpoint halt
Dec 9 15:22:32 soap kernel: usb-storage: Soft reset: clearing bulk-out endpoint halt
Dec 9 15:22:32 soap kernel: usb-storage: Soft reset done
Dec 9 15:22:32 soap kernel: usb-storage: scsi cmd done, result=0x70000
Matt, any ideas? This drive used to work just fine, and I can reboot
into 2.4 to verify this.
Ok, this works just fine connecting to uhci-hcd, no errors or timeouts
at all. For both 2.4.20 and 2.5.50-bk. So it's probably a EHCI
problem, or combination of ehci and usb-storage.
Any ideas?
Given there's only one place in the EHCI driver where EREMOTEIO
shows up, I'm tempted to believe that the hardware really did
return a short read in that last packet.
As for why it did so, no ideas just now. Though I wonder if
maybe retrying short reads wouldn't help, on the premise that
the disk had a temporary "can't keep up" problem, since using
those scatterlist operations drives that hardware much faster
than it was ever driven by earlier kernels.
- Dave
-------------------------------------------------------
This sf.net email is sponsored by:ThinkGeek
Welcome to geek heaven.
http://thinkgeek.com/sf
_______________________________________________
[EMAIL PROTECTED]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
