--- trunk/busybox/mdev.rc	2010/08/22 16:43:06	1113
+++ trunk/busybox/mdev.rc	2012/04/02 13:07:13	1723
@@ -32,21 +32,64 @@
 	evaluate_retval
 }
 
+# This works for 2.6.15 kernels or greater
+trigger_uevents()
+{
+	local list=""
+	local i
+	local first
+	local last
+	local default
+
+	# if you want real coldplug (with all modules being loaded for all
+	# devices in the system), uncomment out the next line.
+	list="${lis}t $(echo /sys/bus/*/devices/*/uevent)"
+	list="${list} $(echo /sys/class/*/*/uevent)"
+	list="${list} $(echo /sys/block/*/uevent /sys/block/*/*/uevent)"
+	for i in ${list}
+	do
+		case "${i}" in
+			*/device/uevent)
+				# skip followed device symlinks
+				continue
+				;;
+			*/class/mem/*|*/class/tty/*)
+				first="${first} ${i}"
+				;;
+			*/block/md*)
+				last="${last} ${i}"
+				;;
+			*/*)
+				default="${default} ${i}"
+				;;
+		esac
+	done
+
+	# trigger the sorted events
+	for i in ${first} ${default} ${last}
+	do
+		echo "add" > "${i}"
+	done
+}
+
 # main functions
 start_devicemanager()
 {
 	# create a ramdisk for populating mdev
-	rc_print "Mounting mdev at /dev ..."
-	# many video drivers needed exec access
-	fstype=ramfs
-	# tmpfs was suggested by Greg Kroah-Hartman
-	kernel_supports_fs tmpfs && fstype=tmpfs
-	# mount devtmpfs if supported
-	kernel_supports_fs devtmpfs && fstype=devtmpfs
-	mount -n -t ${fstype} mdev /dev -o exec,nosuid,mode=0755,size=1024
-	evaluate_retval
+	if [[ -z $(grep '[[:space:]]/dev[[:space:]]' /proc/mounts | cut -d ' ' -f2) ]]
+	then
+		rc_print "Mounting mdev at /dev ..."
+		# many video drivers needed exec access
+		fstype=ramfs
+		# tmpfs was suggested by Greg Kroah-Hartman
+		kernel_supports_fs tmpfs && fstype=tmpfs
+		# mount devtmpfs if supported
+		kernel_supports_fs devtmpfs && fstype=devtmpfs
+		mount -n -t ${fstype} dev /dev -o exec,nosuid,mode=0755,size=10M
+		evaluate_retval
+	fi
 
-	# other eeded device nodes with udev
+	# other needed device nodes with mdev
 	seed_dev
 
 	if [ -e /proc/sys/kernel/hotplug ]
@@ -65,6 +108,9 @@
 		modprobe -q unix 2>/dev/null
 	fi
 
+	rc_print "  Populating /dev with existing devices through uevents ..."
+	trigger_uevents
+
 	rc_print "  Starting mdev ..."
 	/sbin/mdev -s
 	evaluate_retval