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crypto: inside-secure - Fix dma_unmap_sg() nents value

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[ Upstream commit cb7fa6b6fc ]

The `dma_unmap_sg()` functions should be called with the same nents as the
`dma_map_sg()`, not the value the map function returned.

Fixes: c957f8b3e2 ("crypto: inside-secure - avoid unmapping DMA memory that was not mapped")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Reviewed-by: Antoine Tenart <atenart@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thomas Fourier
2025-06-20 09:29:26 +02:00
committed by Greg Kroah-Hartman
parent 7cf6bccb4d
commit d94de7bade
1 changed files with 6 additions and 2 deletions
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drivers/crypto/inside-secure/safexcel_hash.c
+6 -2
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@@ -249,7 +249,9 @@ static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv,
safexcel_complete(priv, ring);
if (sreq->nents) {
dma_unmap_sg(priv->dev, areq->src, sreq->nents, DMA_TO_DEVICE);
dma_unmap_sg(priv->dev, areq->src,
sg_nents_for_len(areq->src, areq->nbytes),
DMA_TO_DEVICE);
sreq->nents = 0;
}
@@ -497,7 +499,9 @@ unmap_result:
DMA_FROM_DEVICE);
unmap_sg:
if (req->nents) {
dma_unmap_sg(priv->dev, areq->src, req->nents, DMA_TO_DEVICE);
dma_unmap_sg(priv->dev, areq->src,
sg_nents_for_len(areq->src, areq->nbytes),
DMA_TO_DEVICE);
req->nents = 0;
}
cdesc_rollback: