I googled the message and see that other projects are complaining too.

It may be a kernel problem:
https://bugzilla.redhat.com/show_bug.cgi?id=579874

Basically, there has been no change in the USB code (libusb interface)
 for some months.

Paul Alfille

On Sun, Apr 11, 2010 at 4:32 AM, Robert <[email protected]> wrote:
> Running OWFS 2.7p35 on Debian 2.6.26-2-686. All is working fine, but logs are
> piling up with messages from kernel, like:
>
> I posted a bug for this, because it looks like the kernel is seeing unexpected
> behavior from OWFS. And this is causing dropping of the bus (and thus the
> reconnects). However, I'm not sure if this is a problem with OWFS, or libusb.
> The packages I installed for getting the usb to work:
> stinger:~# dpkg -l |grep usb
> ii  libusb-0.1-4                      2:0.1.12-13              userspace USB
> programming library
> ii  libusb-dev                        2:0.1.12-13              userspace USB
> programming library development files
> ii  usbutils                          0.73-10lenny1            Linux USB
> utilities
>
> Before I get rid of this messages, I'm bound to the old NSLU2. Wanting to move
> from that to a native Debian install, for compatibility with the rest of my
> servers, and to be able to virtualize it.
> Like I said, all is working fine, except the log filling up rapidly with the
> messages below each time the bus gets queried. Stop querying the bus, and the
> errors stop too.
>
> Apr 10 21:16:30 stinger OWFS[2769]: DEFAULT: ow_ds9490.c:DS9490_sub_open(558)
> Opened USB DS9490 bus master at 001/002.
> Apr 10 21:16:30 stinger OWFS[2769]: DEFAULT: ow_ds9490.c:DS9490_reconnect(594)
> Found USB DS9490 bus master after USB rescan as [001/002]
> Apr 10 21:16:30 stinger OWFS[2769]: DEFAULT: ow_reconnect.c:TestConnection(58)
> DS9490 bus master reconnected
> Apr 10 21:16:51 stinger kernel: [ 3520.707117] usb 1-2: usbfs: process 10888
> (owfs) did not claim interface 0 before use
> Apr 10 21:17:52 stinger kernel: [ 3581.334635] usb 1-2: usbfs: process 10968
> (owfs) did not claim interface 0 before use
> Apr 10 21:17:52 stinger kernel: [ 3581.334635] usb 1-2: usbfs: process 10968
> (owfs) did not claim interface 0 before use
> Apr 10 21:18:53 stinger OWFS[2807]: DEFAULT: ow_ds9490.c:DS9490_sub_open(558)
> Opened USB DS9490 bus master at 001/002.
> Apr 10 21:18:53 stinger kernel: [ 3641.967138] usb 1-2: usbfs: process 10971
> (owserver) did not claim interface 0 before use
> Apr 10 21:18:53 stinger OWFS[2807]: DEFAULT: ow_ds9490.c:DS9490_reconnect(594)
> Found USB DS9490 bus master after USB rescan as [001/002]
> Apr 10 21:18:53 stinger OWFS[2807]: DEFAULT: ow_reconnect.c:TestConnection(58)
> DS9490 bus master reconnected
> Apr 10 21:19:53 stinger kernel: [ 3702.830670] usb 1-2: usbfs: process 10992
> (owserver) did not claim interface 0 before use
> Apr 10 21:19:53 stinger kernel: [ 3702.830670] usb 1-2: usbfs: process 10992
> (owserver) did not claim interface 0 before use
> Apr 10 21:19:53 stinger kernel: [ 3702.838745] usb 1-2: usbfs: process 10992
> (owserver) did not claim interface 0 before use
> Apr 10 21:19:53 stinger kernel: [ 3702.841832] usb 1-2: usbfs: process 10992
> (owserver) did not claim interface 0 before use
> Apr 10 21:19:53 stinger kernel: [ 3702.844809] usb 1-2: usbfs: process 10992
> (owserver) did not claim interface 0 before use
> Apr 10 21:19:53 stinger kernel: [ 3702.847785] usb 1-2: usbfs: process 10992
> (owserver) did not claim interface 0 before use
> Apr 10 21:19:53 stinger OWFS[2769]: DEFAULT: ow_reconnect.c:TestConnection(52)
> Failed to reconnect DS9490 bus master!
> Apr 10 21:19:53 stinger kernel: [ 3702.853866] usb 1-2: usbfs: process 10994
> (owfs) did not claim interface 0 before use
> Apr 10 21:21:55 stinger OWFS[2769]: DEFAULT: ow_reconnect.c:TestConnection(52)
> Failed to reconnect DS9490 bus = master!
> Apr 10 21:21:55 stinger kernel: [ 3824.102969] usb 1-2: usbfs: process 11010
> (owfs) did not claim interface 0 before use
> Apr 10 21:22:39 stinger OWFS[2769]: DEFAULT: ow_reconnect.c:TestConnection(52)
> Failed to reconnect DS9490 bus master!
> Apr 10 21:22:39 stinger kernel: [ 3868.094865] usb 1-2: usbfs: process 11031
> (owfs) did not claim interface 0 before use
> Apr 10 21:22:39 stinger kernel: [ 3868.094883] usb 1-2: usbfs: interface 0
> claimed by usbfs while 'owserver' sets config #1
>
> Hope someone can tell me if it's a bug in OWFS not talking nicely to the usb,
> or if it has something to do with my installation. (Same 1wire network working
> flawless on the NSLU2 (Unslung).
>
> Thanks for any help!
>
> Regards,
> Robert
>
>
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