Comment 28 for bug 156085

Emmet. I just realised you seem to be suggest it worked with the patch (for KVM on Hardy wasn't it?) but the patch simply replaces /proc/bus/usb/ with /dev/bus/usb/ but there is no 'devices' file link there *unless* the uncommented magic in /etc/init.d/mountdevsubfs.sh (or equivalent) has created a usbfs and linked /dev/bus/usb/devices into it.

I've tested the KVM Gutsy patch here. Without mounting the usbfs (using my new mountdevusbfs.sh script) I get:

$ ls -a /dev/bus/usb
. .. 001 002 003 004 005

info usbhost
Could not open /dev/bus/usb/devices

But once the usbfs is mounted and the 'devices' link created, it works:

$ sudo /etc/init.d/mountdevusbfs.sh start
$ ls -a /dev/bus/usb
. .. 001 002 003 004 005 devices .usbfs

info usbhost
 Device 5.4, speed 480 Mb/s

    Class 00: USB device 0781:5151, Cruzer Micro

  Device 5.3, speed 480 Mb/s

    Class ef: USB device 05ca:1836

  Device 3.3, speed 12 Mb/s

    Class e0: USB device 044e:300d, UGX

Is it possible the Hardy init is creating the usbfs and linking devices, or is there some confusion here?