fs/erofs: Quieten test for filesystem presence

At present listing a partition produces lots of errors about this
filesystem:

   => part list mmc 4
   cannot find valid erofs superblock
   cannot find valid erofs superblock
   cannot read erofs superblock: -5
   [9 more similar lines]

Use debugging rather than errors when unable to find a signature, as is
done with other filesystems.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index d33926281b47cee026eaef45711aca4612e4722a..d405d488fd27ace2ff6d8ef3be2ea971ccad968f 100644 (file)
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -68,14 +68,14 @@ int erofs_read_superblock(void)
 
        ret = erofs_blk_read(data, 0, erofs_blknr(sizeof(data)));
        if (ret < 0) {
-               erofs_err("cannot read erofs superblock: %d", ret);
+               erofs_dbg("cannot read erofs superblock: %d", ret);
                return -EIO;
        }
        dsb = (struct erofs_super_block *)(data + EROFS_SUPER_OFFSET);
 
        ret = -EINVAL;
        if (le32_to_cpu(dsb->magic) != EROFS_SUPER_MAGIC_V1) {
-               erofs_err("cannot find valid erofs superblock");
+               erofs_dbg("cannot find valid erofs superblock");
                return ret;
        }