Script for corrent unbind usb devices before suspend

20custom-hcd.sh

#!/bin/sh

# Put this file into /etc/pm/sleep.d and don't forget
# `chmod +x to /etc/pm/sleep.d/20custom-hcd.sh'
# See http://ubuntuforums.org/showpost.php?p=11534892&postcount=88

TMPLIST=/tmp/hdc-dev-list

case "${1}" in
    hibernate|suspend)
        > $TMPLIST

        for i in $(find /sys/bus/pci/drivers/{xhci,ehci}_hcd | egrep '[0-9a-z]+\:[0-9a-z]+\:.*$'); do
            device=$(basename $i)
            path=$(dirname $i)/unbind

            echo "Unbind device $device in $path"
            echo -n $device > $path
            echo $i >> $TMPLIST
        done
    ;;
    
    resume|thaw)
        for i in $(cat $TMPLIST); do
            device=$(basename $i)
            path=$(dirname $i)/bind

            echo "Bind device $device in $path"
            echo -n $device > $path
        done

        rm $TMPLIST
    ;;

esac