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    SubjectRe: 2.6.23-rc1: USB hard disk broken
    On Thu, 9 Aug 2007, Dan Zwell wrote:

    > Oliver Neukum wrote:
    > > Am Sonntag 05 August 2007 schrieb Tino Keitel:
    > >> On Thu, Jul 26, 2007 at 10:06:40 +0200, Oliver Neukum wrote:
    > >>> Am Mittwoch 25 Juli 2007 schrieb Tino Keitel:
    > >>>> On Wed, Jul 25, 2007 at 10:24:36 +0200, Oliver Neukum wrote:
    > >>>>> Am Mittwoch 25 Juli 2007 schrieb Tino Keitel:
    > >>>>>> Hi,
    > >>>>>>
    > >>>>>> I just tried 2.6.23-rc1 and shortly after the boot my external USB hard
    > >>>>>> disk went mad.
    > >>>> [...]
    > >>>>
    > >>>>> Please recompile with CONFIG_USB_DEBUG set.
    > >>>>>
    > >> I tried again -rc1 without USB_DEBUG, and was able to reproduce the
    > >> bug 2 times. At the second time, the kernel log shows this:
    > >>
    > >> 2007-08-05_10:30:27.75572 kern.err: ehci_hcd 0000:00:1d.7: dev 6 ep1in scatterli
    > >> st error 0/-121
    > >> 2007-08-05_10:30:27.86576 kern.info: usb 1-6: reset high speed USB device using ehci_hcd and address 5
    > >> 2007-08-05_10:30:55.95293 kern.info: usb 1-6: USB disconnect, address 5
    > >> 2007-08-05_10:30:55.95300 kern.err: ehci_hcd 0000:00:1d.7: dev 6 ep1in scatterlist error -108/-108
    > >
    > > David, does this error say anything to you?
    > >
    > > Regards
    > > Oliver
    >
    > Hi,
    >
    > I just completed a git bisect, and commit
    > 8dfe4b14869fd185ca25ee88b02ada58a3005eaf was the commit that introduced
    > this problem. This is "usb-storage: implement autosuspend". I don't
    > think there have been many changes in drivers/usb since I last verified
    > this problem, so I'm pretty sure this is still happening in the latest
    > kernel.
    >
    > The first thing I am going to do is pull the latest sources, attempt to
    > revert this patch, and see whether the kernel compiles and works
    > properly with my USB hard drive. Please let me know of anything I can do
    > to help.

    What makes you think the problem you see is the same as the one
    described by Tino? Do you get the "scatterlist error 0/-121" line in
    your log?

    Please provide a dmesg log showing your problem with CONFIG_USB_DEBUG
    enabled.

    Alan Stern

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