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    SubjectRe: [linux-usb-devel] 2.6.21-rc3-mm1
    On Sat, 10 Mar 2007, Mariusz Kozlowski wrote:

    > Hello,
    >
    > > > Right. Can't be 100% sure but without the patch it would have probably
    > > > failed by now so I guess the patch is ok. Not sure how to make usb mouse
    > > > plugging/unplugging process automatic ;-)
    > >
    > > echo FOO >/sys/bus/usb/drivers/usbhid/unbind
    > >
    > > to simulate an unplug (actually, to do an unbind), and
    > >
    > > echo FOO >/sys/bus/usb/drivers/usbhid/unbind
    > ^^^^^^ bind I guess

    Whoops, yes. Cut & paste strikes again...

    > > to do a bind, where FOO is the name of the USB mouse device link present
    > > in the /sys/bus/usb/drivers/usbhid directory.
    >
    > # ls -al /sys/bus/usb/drivers/usbhid
    > total 0
    > drwxr-xr-x 2 root root 0 Mar 10 17:30 .
    > drwxr-xr-x 8 root root 0 Mar 10 17:14 ..
    > lrwxrwxrwx 1 root root 0 Mar 10 17:30 2-2:1.0 -> ../../../../devices/pci0000:00/0000:00:0c.0/usb2/2-2/2-2:1.0
    > --w------- 1 root root 4096 Mar 10 17:17 bind
    > lrwxrwxrwx 1 root root 0 Mar 10 17:17 module -> ../../../../module/usbhid
    > --w------- 1 root root 4096 Mar 10 17:17 new_id
    > --w------- 1 root root 0 Mar 10 17:22 unbind
    >
    > # echo "2-2:1.0" > /sys/bus/usb/drivers/usbhid/unbind
    > bash: echo: write error: No such device
    >
    > Any thoughts?

    Another mistake on my part. The correct command is

    echo -n '2-2:1.0' >/sys/bus/usb/drivers/usbhid/unbind

    Without the "-n", the system thinks that the newline character at the end
    of the line written by "echo" is part of the filename.

    Alan Stern

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