-Remove ErrorBuffer and use %pV

-Add __printf to enable argument mistmatch warnings

Original patch by Joe Perches.
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>