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crypto: chelsio - check for sg null 

Add warning message if sg is NULL after skipping bytes.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Harsh Jain 2018-01-11 16:45:49 +05:30 committed by Herbert Xu
parent db6deea489
commit 8daa32b935
1 changed files with 2 additions and 1 deletions
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3
drivers/crypto/chelsio/chcr_algo.c
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@ -574,7 +574,8 @@ static void ulptx_walk_add_sg(struct ulptx_walk *walk,
skip = 0;
}
}
if (walk->nents == 0) {
WARN(!sg, "SG should not be null here\n");
if (sg && (walk->nents == 0)) {
small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len);
sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE);
walk->sgl->len0 = cpu_to_be32(sgmin);