--- /dev/null
+From d1f76c9546758611bcadd6ad10fc0c4c1ceb14ee Mon Sep 17 00:00:00 2001
+From: Sebastian Pipping <sebastian@pipping.org>
+Date: Sun, 10 Jun 2012 19:05:38 +0200
+Subject: [PATCH] Port mdstart patch from busybox 1.19.3 to 1.20.1
+
+---
+ include/applets.src.h | 1 +
+ util-linux/Config.src | 7 ++++++
+ util-linux/Kbuild.src | 1 +
+ util-linux/mdStart.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 75 insertions(+)
+ create mode 100644 util-linux/mdStart.c
+
+diff --git a/include/applets.src.h b/include/applets.src.h
+index 252a060..0b199bc 100644
+--- a/include/applets.src.h
++++ b/include/applets.src.h
+@@ -239,6 +239,7 @@ IF_MAKEMIME(APPLET(makemime, BB_DIR_BIN, BB_SUID_DROP))
+ IF_MAN(APPLET(man, BB_DIR_SBIN, BB_SUID_DROP))
+ IF_MATCHPATHCON(APPLET(matchpathcon, BB_DIR_USR_SBIN, BB_SUID_DROP))
+ IF_MD5SUM(APPLET_NOEXEC(md5sum, md5_sha1_sum, BB_DIR_USR_BIN, BB_SUID_DROP, md5sum))
++IF_MDSTART(APPLET(mdstart, BB_DIR_SBIN, BB_SUID_DROP))
+ IF_MICROCOM(APPLET(microcom, BB_DIR_USR_BIN, BB_SUID_DROP))
+ IF_MKDIR(APPLET_NOFORK(mkdir, mkdir, BB_DIR_BIN, BB_SUID_DROP, mkdir))
+ IF_MKFS_VFAT(APPLET_ODDNAME(mkdosfs, mkfs_vfat, BB_DIR_SBIN, BB_SUID_DROP, mkfs_vfat))
+diff --git a/util-linux/Config.src b/util-linux/Config.src
+index 57a52ce..e07fe2b 100644
+--- a/util-linux/Config.src
++++ b/util-linux/Config.src
+@@ -404,6 +404,13 @@ config LSUSB
+
+ This version uses sysfs (/sys/bus/usb/devices) only.
+
++config MDSTART
++ bool "mdstart"
++ default n
++ help
++ Allows you to autostart /dev/md devices if using an initramfs to
++ boot.
++
+ config MKSWAP
+ bool "mkswap"
+ default y
+diff --git a/util-linux/Kbuild.src b/util-linux/Kbuild.src
+index 468fc6b..0bc9a9b 100644
+--- a/util-linux/Kbuild.src
++++ b/util-linux/Kbuild.src
+@@ -24,6 +24,7 @@ lib-$(CONFIG_HWCLOCK) += hwclock.o
+ lib-$(CONFIG_IPCRM) += ipcrm.o
+ lib-$(CONFIG_IPCS) += ipcs.o
+ lib-$(CONFIG_LOSETUP) += losetup.o
++lib-$(CONFIG_MDSTART) += mdStart.o
+ lib-$(CONFIG_LSPCI) += lspci.o
+ lib-$(CONFIG_LSUSB) += lsusb.o
+ lib-$(CONFIG_MKFS_EXT2) += mkfs_ext2.o
+diff --git a/util-linux/mdStart.c b/util-linux/mdStart.c
+new file mode 100644
+index 0000000..0c55bab
+--- /dev/null
++++ b/util-linux/mdStart.c
+@@ -0,0 +1,66 @@
++/*
++ * Linux 2.6(+) RAID Autostarter
++ *
++ * Copyright (C) 2005 by Tim Yamin <plasmaroo@gentoo.org> <plasm@roo.me.uk>
++ * Copyright (C) 2012 by Sebastian Pipping <sebastian@pipping.org>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ * General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
++ *
++ */
++
++//usage:#define mdstart_trivial_usage
++//usage: "[PARTITION] MD-NODE [[PARTITION] MD-NODE ...]"
++//usage:
++//usage:#define mdstart_full_usage "\n\n"
++//usage: "Run the RAID_AUTORUN ioctl on the given MD number"
++
++#include <sys/types.h>
++#include <sys/stat.h>
++#include <fcntl.h>
++#include <sys/ioctl.h>
++#include <linux/major.h>
++#include <linux/raid/md_u.h>
++
++extern int
++mdstart_main(int argc, char *argv[])
++{
++ int i, fd, part = 0, retval = 0;
++
++ if(argc < 2)
++ {
++ bb_show_usage();
++ }
++
++ for(i = 1; i < argc; i++)
++ {
++ if(sscanf(argv[i], "%d", &part) == 1)
++ continue;
++
++ fd = open(argv[i], 0, 0);
++ if (fd >= 0)
++ {
++ ioctl(fd, RAID_AUTORUN, part);
++ close(fd);
++ } else
++ {
++ printf("Error: Failed to open %s!\n", argv[i]);
++ retval=1;
++ }
++
++ part = 0;
++ }
++
++ return retval;
++}
+--
+1.7.10.2
+