Commit 4e53be21 authored by Thomas Fourier's avatar Thomas Fourier Committed by Herbert Xu
Browse files

crypto: keembay - Add missing check after sg_nents_for_len() 



sg_nents_for_len() returns an int which is negative in case of error.

Fixes: 472b0444 ("crypto: keembay - Add Keem Bay OCS HCU driver")
Signed-off-by: default avatarThomas Fourier <fourier.thomas@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 3ed63344

drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c

+4 −1
Original line number Diff line number Diff line
@@ -232,7 +232,7 @@ static int kmb_ocs_dma_prepare(struct ahash_request *req) 
	struct device *dev = rctx->hcu_dev->dev;

	unsigned int remainder = 0;

	unsigned int total;

	size_t nents;

	int nents;

	size_t count;

	int rc;

	int i;
@@ -253,6 +253,9 @@ static int kmb_ocs_dma_prepare(struct ahash_request *req) 
	/* Determine the number of scatter gather list entries to process. */

	nents = sg_nents_for_len(req->src, rctx->sg_data_total - remainder);



	if (nents < 0)

		return nents;



	/* If there are entries to process, map them. */

	if (nents) {

		rctx->sg_dma_nents = dma_map_sg(dev, req->src, nents,