bind/unbind USB ports

/sys/bus/pci/drivers/${driver}_hcd

${driver} could be ehci ohci uhci

the file with : is the id,

#to unbind
 echo -n ${id} > unbind

#bind
 echo -n ${id} > bind
 
#Note that after unbind, the id file will be gone, the id should be somehow saved to re-bind

script to bind/unbind:

function unbind_usb {
    for driver in ehci ohci uhci; do
        cd "/sys/bus/pci/drivers/${driver}_hcd";
        ids=$(ls | grep :);
        echo $ids > /tmp/DISABLED_$driver;
        for id in $ids; do
            echo "Unbinding $id";
            echo -n "$id" > unbind;
            disabled="$disabled $id";
        done;
    done;
}

function bind_usb {
    for driver in ehci ohci uhci; do
        cd "/sys/bus/pci/drivers/${driver}_hcd";
        for id in $(cat /tmp/DISABLED_$driver); do
            echo "Binding $id";
            echo -n "$id" > bind;
        done;
        rm /tmp/DISABLED_$driver;
    done;
}

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