target/linux/generic/pending-5.10/492-try-auto-mounting-ubi0-rootfs-in-init-do_mounts.c.patch

   1 From: Daniel Golle <daniel@makrotopia.org>
   2 Subject: try auto-mounting ubi0:rootfs in init/do_mounts.c
   3
   4 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
   5 ---
   6  init/do_mounts.c | 26 +++++++++++++++++++++++++-
   7  1 file changed, 25 insertions(+), 1 deletion(-)
   8
   9 --- a/init/do_mounts.c
  10 +++ b/init/do_mounts.c
  11 @@ -474,7 +474,30 @@ retry:
  12  out:
  13         put_page(page);
  14  }
  15 -
  16 +
  17 +#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
  18 +static int __init mount_ubi_rootfs(void)
  19 +{
  20 +       int flags = MS_SILENT;
  21 +       int err, tried = 0;
  22 +
  23 +       while (tried < 2) {
  24 +               err = do_mount_root("ubi0:rootfs", "ubifs", flags, \
  25 +                                       root_mount_data);
  26 +               switch (err) {
  27 +                       case -EACCES:
  28 +                               flags |= MS_RDONLY;
  29 +                               tried++;
  30 +                               break;
  31 +                       default:
  32 +                               return err;
  33 +               }
  34 +       }
  35 +
  36 +       return -EINVAL;
  37 +}
  38 +#endif
  39 +
  40  #ifdef CONFIG_ROOT_NFS
  41
  42  #define NFSROOT_TIMEOUT_MIN    5
  43 @@ -567,6 +590,10 @@ void __init mount_root(void)
  44                 return;
  45         }
  46  #endif
  47 +#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
  48 +       if (!mount_ubi_rootfs())
  49 +               return;
  50 +#endif
  51  #ifdef CONFIG_BLOCK
  52         {
  53                 int err = create_dev("/dev/root", ROOT_DEV);