MTDSB: lookup_bdev() returned 0 / MTDSB: New superblock for device 6 ("root(1)")

[Arno Steffen]

Do you know what this messages mean?

MTDSB: lookup_bdev() returned 0
MTDSB: New superblock for device 6 ("root(1)")


Is this a normal behavior for a read only filesystem?
I get them while mounting the the root-flash-filesystem. Next message is
VFS: Mounted root (jffs2 filesystem) readonly on device 31:6.

The reason why I ask: While powercycling my device I get sometime (1
in a 100) "uncorrectable error".
But this error dissapear after reboot... Now I set debug to level1 but
can't understand messages ...

Any help is welcome!!
Regards
Arno