infobase/configuration/machine/asus_g74s/20_custom-ehci_hcd

   1 #!/bin/sh
   2 #inspired by http://art.ubuntuforums.org/showpost.php?p=9744970&postcount=19
   3 #...and http://thecodecentral.com/2011/01/18/fix-ubuntu-10-10-suspendhibernate-not-working-bug
   4 # tidied by tqzzaa :)
   5
   6 VERSION=1.1
   7 DEV_LIST=/tmp/usb-dev-list
   8 DRIVERS_DIR=/sys/bus/pci/drivers
   9 DRIVERS="ehci xhci" # ehci_hcd, xhci_hcd
  10 HEX="[[:xdigit:]]"
  11 MAX_BIND_ATTEMPTS=2
  12 BIND_WAIT=0.1
  13
  14 unbindDev() {
  15   echo -n > $DEV_LIST 2>/dev/null
  16   for driver in $DRIVERS; do
  17     DDIR=$DRIVERS_DIR/${driver}_hcd
  18     for dev in `ls $DDIR 2>/dev/null | egrep "^$HEX+:$HEX+:$HEX"`; do
  19       echo -n "$dev" > $DDIR/unbind
  20       echo "$driver $dev" >> $DEV_LIST
  21     done
  22   done
  23 }
  24
  25 bindDev() {
  26   if [ -s $DEV_LIST ]; then
  27     while read driver dev; do
  28       DDIR=$DRIVERS_DIR/${driver}_hcd
  29       while [ $((MAX_BIND_ATTEMPTS)) -gt 0 ]; do
  30           echo -n "$dev" > $DDIR/bind
  31           if [ ! -L "$DDIR/$dev" ]; then
  32             sleep $BIND_WAIT
  33           else
  34             break
  35           fi
  36           MAX_BIND_ATTEMPTS=$((MAX_BIND_ATTEMPTS-1))
  37       done
  38     done < $DEV_LIST
  39   fi
  40   rm $DEV_LIST 2>/dev/null
  41 }
  42
  43 case "$1" in
  44   hibernate|suspend) unbindDev;;
  45   resume|thaw)       bindDev;;
  46 esac