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crypto: caam - fix output sequence contiguity check 

This patch fixes the assumption that output sequence is not contiguous
when input sequence is not contiguous and in-place encryption is done.
Output sequence does not need to be contiguous with associated data.

Signed-off-by: Tudor Ambarus <tudor.ambarus@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tudor Ambarus 2014-10-24 18:13:37 +03:00 committed by Herbert Xu
parent a727c4b6e5
commit 19167bfd8a
1 changed files with 2 additions and 1 deletions
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3
drivers/crypto/caam/caamalg.c
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@ -2185,7 +2185,8 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request
assoc_nents = assoc_nents ? : 1;
src_nents = src_nents ? : 1;
sec4_sg_len += assoc_nents + 1 + src_nents;
if (likely(req->src == req->dst))
if (req->src == req->dst &&
(src_nents || iv_dma + ivsize != sg_dma_address(req->src)))
contig &= ~GIV_DST_CONTIG;
}