Apply patch from Gentoo bug #220913 for tuxonice resume

ChangeLog

@@ -3,6 +3,10 @@
 # Distributed under the GPL v2
 # $Id$
 
+  05 Sep 2009; Andrew Gaffney <agaffney@gentoo.org> defaults/initrd.scripts,
+  defaults/linuxrc:
+  Apply patch from Gentoo bug #220913 for tuxonice resume
+
   14 Aug 2009; Andrew Gaffney <agaffney@gentoo.org> genkernel.conf:
   Enable DISKLABEL=yes by default
 

defaults/initrd.scripts

@@ -856,24 +856,30 @@ rundebugshell() {
 	fi
 }
 
+do_resume() {
+	if [ -d /proc/suspend2 -o -d /sys/power/suspend2 -o -d /sys/power/tuxonice ]; then
+		tuxonice_resume
+	else
+		swsusp_resume
+	fi
+}
+
 swsusp_resume() {
 	# determine swap resume partition
 	local device=$(ls -lL "${REAL_RESUME}" | sed 's/\  */ /g' | cut -d \  -f 5-6 | sed 's/,\ */:/')
 	[ -f /sys/power/resume ] && echo "${device}" > /sys/power/resume
-	return 0
 }
 
 tuxonice_resume() {
-	[ -d /proc/suspend2 -o -d /sys/power/suspend2 -o -d /sys/power/tuxonice ] || return
-
 	local splash_theme
-
 	if grep "splash=" /proc/cmdline > /dev/null 2>&1; then
 		splash_theme=$(cat /proc/cmdline | sed 's/.*splash=/splash=/' | sed 's/ .*//' | sed 's/.*theme://' | sed 's/,.*//')
 	fi
 
 	local tuxonice_userui_program="/sys/power/tuxonice/user_interface/program"
 	local tuxonice_do_resume="/sys/power/tuxonice/do_resume"
+	local tuxonice_resumedev="/sys/power/tuxonice/resume"
+	local tuxonice_replace_swsusp="/sys/power/tuxonice/replace_swsusp"
 
 	#
 	# Backward compatibility
@@ -881,13 +887,27 @@ tuxonice_resume() {
 	if [ -e /sys/power/suspend2 ]; then
 		tuxonice_userui_program="/sys/power/suspend2/user_interface/program"
 		tuxonice_do_resume="/sys/power/suspend2/do_resume"
+		tuxonice_resumedev="/sys/power/suspend2/resume"
+		tuxonice_replace_swsusp="/sys/power/suspend2/replace_swsusp"
 	elif [ -e /proc/suspend2 ]; then
 		tuxonice_userui_program="/proc/suspend2/userui_program"
 		tuxonice_do_resume="/proc/suspend2/do_resume"
+		tuxonice_resumedev="/proc/suspend2/resume"
+		tuxonice_replace_swsusp="/proc/suspend2/replace_swsusp"
+	fi
+
+	# if 'use_swsusp' is given, use swsusp instead
+	if grep "use_swsusp" /proc/cmdline > /dev/null 2>&1; then
+		echo 0 > ${tuxonice_replace_swsusp}
+		swsusp_resume
+		return
 	fi
 
 	modules_scan tuxonice
 
+	# we both configure tuxonice and activate resuming,
+	# however the kernel will resume only if an image is found
+
 	if ! grep suspend_noui /proc/cmdline > /dev/null 2>&1; then
 		which suspend2ui_text > /dev/null 2>&1 && which suspend2ui_text > "${tuxonice_userui_program}"
 		which tuxoniceui_text > /dev/null 2>&1 && which tuxoniceui_text > "${tuxonice_userui_program}"
@@ -900,8 +920,9 @@ tuxonice_resume() {
 			which tuxoniceui_fbsplash > /dev/null 2>&1 && which tuxoniceui_fbsplash > "${tuxonice_userui_program}"
 		fi
 
-		echo > "${tuxonice_do_resume}"
 	fi
+	echo "${REAL_RESUME}" > "${tuxonice_resumedev}"
+	echo > "${tuxonice_do_resume}"
 }
 
 find_loop() {

defaults/linuxrc

@@ -167,7 +167,7 @@ do
 		swap_keydev\=*)
 			CRYPT_SWAP_KEYDEV=`parse_opt "${x}"`
 		;;
-		real_resume\=*)
+		real_resume\=*|resume\=*)
 			REAL_RESUME=`parse_opt "${x}"`
 		;;
 		noresume)
@@ -299,9 +299,7 @@ then
 				;;
 		esac
 
-		swsusp_resume
-#		suspend_resume
-		tuxonice_resume
+		do_resume
 	fi
 fi