target/linux/generic/patches-4.1/492-try-auto-mounting-ubi0-rootfs-in-init-do_mounts.c.patch

   1 From eea9e1785e4c05c2a3444506aabafa0ae958538f Mon Sep 17 00:00:00 2001
   2 From: Daniel Golle <daniel@makrotopia.org>
   3 Date: Sat, 17 May 2014 03:35:02 +0200
   4 Subject: [PATCH 4/5] try auto-mounting ubi0:rootfs in init/do_mounts.c
   5 To: openwrt-devel@lists.openwrt.org
   6
   7 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
   8 ---
   9  init/do_mounts.c | 26 +++++++++++++++++++++++++-
  10  1 file changed, 25 insertions(+), 1 deletion(-)
  11
  12 --- a/init/do_mounts.c
  13 +++ b/init/do_mounts.c
  14 @@ -438,7 +438,28 @@ retry:
  15  out:
  16         put_page(page);
  17  }
  18 -
  19 +
  20 +static int __init mount_ubi_rootfs(void)
  21 +{
  22 +       int flags = MS_SILENT;
  23 +       int err, tried = 0;
  24 +
  25 +       while (tried < 2) {
  26 +               err = do_mount_root("ubi0:rootfs", "ubifs", flags, \
  27 +                                       root_mount_data);
  28 +               switch (err) {
  29 +                       case -EACCES:
  30 +                               flags |= MS_RDONLY;
  31 +                               tried++;
  32 +                               break;
  33 +                       default:
  34 +                               return err;
  35 +               }
  36 +       }
  37 +
  38 +       return -EINVAL;
  39 +}
  40 +
  41  #ifdef CONFIG_ROOT_NFS
  42
  43  #define NFSROOT_TIMEOUT_MIN    5
  44 @@ -532,6 +553,10 @@ void __init mount_root(void)
  45                         change_floppy("root floppy");
  46         }
  47  #endif
  48 +#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
  49 +       if (!mount_ubi_rootfs())
  50 +               return;
  51 +#endif
  52  #ifdef CONFIG_BLOCK
  53         create_dev("/dev/root", ROOT_DEV);
  54         mount_block_root("/dev/root", root_mountflags);