openadk/target/linux/patches/2.6.36/mtd-root.patch

diff -Nur linux-2.6.36.orig/drivers/mtd/Kconfig linux-2.6.36/drivers/mtd/Kconfig
--- linux-2.6.36.orig/drivers/mtd/Kconfig	2010-10-20 22:30:22.000000000 +0200
+++ linux-2.6.36/drivers/mtd/Kconfig	2010-11-09 13:26:44.923745421 +0100
@@ -53,6 +53,11 @@
 	  devices. Partitioning on NFTL 'devices' is a different - that's the
 	  'normal' form of partitioning used on a block device.
 
+config MTD_ROOTFS_ROOT_DEV
+	bool "Automatically set 'rootfs' partition to be root filesystem"
+	depends on MTD_PARTITIONS
+	default y
+
 config MTD_REDBOOT_PARTS
 	tristate "RedBoot partition table parsing"
 	depends on MTD_PARTITIONS
diff -Nur linux-2.6.36.orig/drivers/mtd/mtdpart.c linux-2.6.36/drivers/mtd/mtdpart.c
--- linux-2.6.36.orig/drivers/mtd/mtdpart.c	2010-10-20 22:30:22.000000000 +0200
+++ linux-2.6.36/drivers/mtd/mtdpart.c	2010-11-09 13:27:26.703745576 +0100
@@ -29,6 +29,7 @@
 #include <linux/kmod.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
+#include <linux/root_dev.h>
 
 /* Our partition linked list */
 static LIST_HEAD(mtd_partitions);
@@ -46,7 +47,7 @@
  * the pointer to that structure with this macro.
  */
 #define PART(x)  ((struct mtd_part *)(x))
-
+#define IS_PART(mtd) (mtd->read == part_read)
 
 /*
  * MTD methods which simply translate the effective address and pass through
@@ -539,14 +540,23 @@
 {
 	struct mtd_part *slave;
 	uint64_t cur_offset = 0;
-	int i;
+	int i, j;
 
 	printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
 
-	for (i = 0; i < nbparts; i++) {
-		slave = add_one_partition(master, parts + i, i, cur_offset);
+ 	for (i = 0, j = 0; i < nbparts; i++) {
+ 		slave = add_one_partition(master, parts + i, j++, cur_offset);
 		if (!slave)
 			return -ENOMEM;
+ 		if (!strcmp(parts[i].name, "rootfs")) {
+#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
+			if (ROOT_DEV == 0) {
+				printk(KERN_NOTICE "mtd: partition \"rootfs\" "
+					"set to be root filesystem\n");
+				ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, slave->mtd.index);
+			}
+#endif
+		}
 		cur_offset = slave->offset + slave->mtd.size;
 	}