target/linux/generic/pending-3.18/480-mtd-set-rootfs-to-be-root-dev.patch

   1 --- a/drivers/mtd/mtdcore.c
   2 +++ b/drivers/mtd/mtdcore.c
   3 @@ -37,6 +37,7 @@
   4  #include <linux/backing-dev.h>
   5  #include <linux/gfp.h>
   6  #include <linux/slab.h>
   7 +#include <linux/root_dev.h>
   8
   9  #include <linux/mtd/mtd.h>
  10  #include <linux/mtd/partitions.h>
  11 @@ -456,6 +457,15 @@ int add_mtd_device(struct mtd_info *mtd)
  12            of this try_ nonsense, and no bitching about it
  13            either. :) */
  14         __module_get(THIS_MODULE);
  15 +
  16 +       if (!strcmp(mtd->name, "rootfs") &&
  17 +           config_enabled(CONFIG_MTD_ROOTFS_ROOT_DEV) &&
  18 +           ROOT_DEV == 0) {
  19 +               pr_notice("mtd: device %d (%s) set to be root filesystem\n",
  20 +                         mtd->index, mtd->name);
  21 +               ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
  22 +       }
  23 +
  24         return 0;
  25
  26  fail_added: