git.stricted.de - GitHub/moto-9609/android_kernel_motorola

author	Szilveszter Ördög <slipszi@gmail.com>
	Wed, 3 Mar 2010 00:03:23 +0000 (08:03 +0800)
committer	Herbert Xu <herbert@gondor.apana.org.au>
	Wed, 3 Mar 2010 00:03:23 +0000 (08:03 +0800)
commit	cbb9bf65ae25dee772e85589136e7dd1c3e743ae
tree	3dbb72e204bdcd15d7a36f27ef28f056b1367965	tree \| snapshot (tar.gz zip)
parent	77ba115c478d442024964b217f9f12192018cc77	commit \| diff

crypto: hash - Fix handling of unaligned buffers

The correct way to calculate the start of the aligned part of an
unaligned buffer is:

  offset = ALIGN(offset, alignmask + 1);

However, crypto_hash_walk_done() has:

  offset += alignmask - 1;
  offset = ALIGN(offset, alignmask + 1);

which actually skips a whole block unless offset % (alignmask + 1) == 1.

This patch fixes the problem.

Signed-off-by: Szilveszter Ördög <slipszi@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>