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crypto: marvell - check return value of sg_nents_for_len

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The sg_nents_for_len() function could fail, this patch add a check for
its return value.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
LABBE Corentin 2015-11-04 21:13:33 +01:00 committed by Herbert Xu
parent 652d5b8a8d
commit c22dafb3b1
2 changed files with 12 additions and 0 deletions
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8
drivers/crypto/marvell/cipher.c
View file

@ -401,7 +401,15 @@ static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req,
return -EINVAL;
creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
if (creq->src_nents < 0) {
dev_err(cesa_dev->dev, "Invalid number of src SG");
return creq->src_nents;
}
creq->dst_nents = sg_nents_for_len(req->dst, req->nbytes);
if (creq->dst_nents < 0) {
dev_err(cesa_dev->dev, "Invalid number of dst SG");
return creq->dst_nents;
}
mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_OP_CRYPT_ONLY,
CESA_SA_DESC_CFG_OP_MSK);

4
drivers/crypto/marvell/hash.c
View file

@ -712,6 +712,10 @@ static int mv_cesa_ahash_req_init(struct ahash_request *req, bool *cached)
creq->req.base.type = CESA_STD_REQ;
creq->src_nents = sg_nents_for_len(req->src, req->nbytes);
if (creq->src_nents < 0) {
dev_err(cesa_dev->dev, "Invalid number of src SG");
return creq->src_nents;
}
ret = mv_cesa_ahash_cache_req(req, cached);
if (ret)