pm-utils script to disable wakup by events from USB devices on Sony Vaio 1311s9rb

45fix-usb-wakup

#!/bin/bash

# /usr/lib/pm-utils/sleep.d/45fix-usb-wakup
# Disable wakup from USB devices on Sony Vaio 1311s9rb

function print_state {
    cat /proc/acpi/wakeup | grep $1 | cut -f3 | cut -d' ' -f1 | tr -d '*'
}

function disable_wakup {
    dev=$1
    if [ "`print_state $dev`" == "enabled" ]; then
        echo $dev > /proc/acpi/wakeup
    fi
}

function enable_wakup {
    dev=$1
    if [ "`print_state $dev`" == "disabled" ]; then
        echo $dev > /proc/acpi/wakeup
    fi
}

case $1 in
    hibernate)
            echo "Going to suspend to disk!"
            ;;
    suspend)
            echo "Fixing acpi settings."

            # Disable wakup by events from USB hubs
            # (e.g. mouse move on some mices)
            disable_wakup XHC
            disable_wakup EHC1
            disable_wakup EHC2

            echo "Suspending to RAM."
            ;;
    thaw)
            echo "Suspend to disk is now over!"
            ;;
    resume)
            echo "We are now resuming."
            ;;
    *)
            echo "Somebody is callin me totally wrong."
            ;;
esac

Thanks! Here is modified version for systemd sleep hook for those who are not using pm-utils: https://gist.github.com/kepi/9dea7aee8a59f3e7c10a

Thanks a bunch ... working perfectly to prevent USB keyboard waking system in Kubuntu 14.04 desktop.

What is purpose of enable_wakup function?
At least its not called inside this script.