target/linux/generic/patches-3.14/492-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 diff --git a/init/do_mounts.c b/init/do_mounts.c
  13 index 82f2288..faba9c6 100644
  14 --- a/init/do_mounts.c
  15 +++ b/init/do_mounts.c
  16 @@ -432,7 +432,27 @@ retry:
  17  out:
  18         put_page(page);
  19  }
  20 -
  21 +
  22 +static int __init mount_ubi_rootfs(void)
  23 +{
  24 +       int flags = MS_SILENT;
  25 +       int err, tried = 0;
  26 +
  27 +       while (tried < 2) {
  28 +               err = do_mount_root("ubi0:rootfs", "ubifs", flags, \
  29 +                                       root_mount_data);
  30 +               switch (err) {
  31 +                       case -EACCES:
  32 +                               flags |= MS_RDONLY;
  33 +                               tried++;
  34 +                       default:
  35 +                               return err;
  36 +               }
  37 +       }
  38 +
  39 +       return -EINVAL;
  40 +}
  41 +
  42  #ifdef CONFIG_ROOT_NFS
  43
  44  #define NFSROOT_TIMEOUT_MIN    5
  45 @@ -526,6 +546,10 @@ void __init mount_root(void)
  46                         change_floppy("root floppy");
  47         }
  48  #endif
  49 +#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
  50 +       if (!mount_ubi_rootfs())
  51 +               return;
  52 +#endif
  53  #ifdef CONFIG_BLOCK
  54         create_dev("/dev/root", ROOT_DEV);
  55         mount_block_root("/dev/root", root_mountflags);
  56 --
  57 1.9.2
  58