Extend previous workarounds for the prefetch bug to cover CBC mode,
clean up the code a bit.
Signed-off-by: NChuck Ebbert <cebbert@redhat.com>
Acked-by: NHarald Welte <HaraldWelte@viatech.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>