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crypto: keembay - Add missing check after sg_nents_for_len()

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

Fixes: 472b04444c ("crypto: keembay - Add Keem Bay OCS HCU driver")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Thomas Fourier
2025-07-28 14:03:30 +02:00
committed by Herbert Xu
parent 3ed6334465
commit 4e53be21dd
1 changed files with 4 additions and 1 deletions
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5
drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c
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@@ -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,