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Date: Fri, 06 Mar 2009 09:54:33 +0100
From: Stan Behrens <lists.nongnu.org@sbeh.de>
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Subject: [Qemu-devel] [BUG] -usb makes qemu fight against linux
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To: qemu-devel@nongnu.org

Hi List,

when you add a bluetooth-dongle, usb-flash-drive or something like that via:
usb_add host:2.23
to you're guest-OS, qemu starts to fight against the linux-usb-configuration.

qemu's output looks like this:
husb: open device 2.32
husb: config #1 need -1
husb: 1 interfaces claimed for configuration 1
husb: grabbed usb device 2.32
husb: config #1 need 1
husb: 1 interfaces claimed for configuration 1
husb: config #1 need 1
husb: 1 interfaces claimed for configuration 1
husb: config #1 need 1
husb: 1 interfaces claimed for configuration 1
husb: config #1 need 1
husb: 1 interfaces claimed for configuration 1

And '# dmesg' says:
[12929.001037] usb 2-3: reset high speed USB device using ehci_hcd and address 32
[12929.782032] usb 2-3: reset high speed USB device using ehci_hcd and address 32
[12930.176041] usb 2-3: reset high speed USB device using ehci_hcd and address 32
[12930.726032] usb 2-3: reset high speed USB device using ehci_hcd and address 32

I tried to prevent foreign communication to the usb-device via:
# udevadm control --stop_exec_queue
# modprobe -r sd_mod usb-storage btusb
# mount -t usbfs -o devmode=0600,devuid=1000,devgid=1000 none /proc/bus/usb/
but it does not help.

The Command-Line I used:
qemu-svn/bin/qemu -L qemu-svn/share/qemu -no-quit -m 512 -net nic -net tap,ifname=job,script=no,downscript=no -drive file=image -startdate 2008-12-24 -usb -snapshot

qemu-svn: 'At revision 6718.'.


Bye.