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Commit 7aff7d0a authored by LABBE Corentin's avatar LABBE Corentin Committed by Herbert Xu
Browse files

crypto: amcc - check return value of sg_nents_for_len 



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

Signed-off-by: default avatarLABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent f9970c28

drivers/crypto/amcc/crypto4xx_core.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -781,6 +781,10 @@ u32 crypto4xx_build_pd(struct crypto_async_request *req, 




	/* figure how many gd is needed */

	/* figure how many gd is needed */

	num_gd = sg_nents_for_len(src, datalen);

	num_gd = sg_nents_for_len(src, datalen);

	if ((int)num_gd < 0) {

		dev_err(dev->core_dev->device, "Invalid number of src SG.\n");

		return -EINVAL;

	}

	if (num_gd == 1)

	if (num_gd == 1)

		num_gd = 0;

		num_gd = 0;