This patches update the SafeXcel driver to stop using the crypto
ahash_request result field for partial results (i.e. on updates).
Instead the driver local safexcel_ahash_req state field is used, and
only on final operations the ahash_request result buffer is updated.
Fixes: 1b44c5a60c13 ("crypto: inside-secure - add SafeXcel EIP197 crypto engine driver")
Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxxxxxxxxx>
---
drivers/crypto/inside-secure/safexcel_hash.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
index 55ff8a340b11..0c5a5820b06e 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -35,7 +35,7 @@ struct safexcel_ahash_req {
bool needs_inv;
u8 state_sz; /* expected sate size, only set once */
- u32 state[SHA256_DIGEST_SIZE / sizeof(u32)];
+ u32 state[SHA256_DIGEST_SIZE / sizeof(u32)] __aligned(sizeof(u32));
u64 len;
u64 processed;
@@ -128,7 +128,7 @@ static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int rin
struct ahash_request *areq = ahash_request_cast(async);
struct crypto_ahash *ahash = crypto_ahash_reqtfm(areq);
struct safexcel_ahash_req *sreq = ahash_request_ctx(areq);
- int cache_len, result_sz = sreq->state_sz;
+ int cache_len;
*ret = 0;
@@ -149,8 +149,8 @@ static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int rin
spin_unlock_bh(&priv->ring[ring].egress_lock);
if (sreq->finish)
- result_sz = crypto_ahash_digestsize(ahash);
- memcpy(sreq->state, areq->result, result_sz);
+ memcpy(areq->result, sreq->state,
+ crypto_ahash_digestsize(ahash));
dma_unmap_sg(priv->dev, areq->src,
sg_nents_for_len(areq->src, areq->nbytes), DMA_TO_DEVICE);
@@ -274,7 +274,7 @@ static int safexcel_ahash_send_req(struct crypto_async_request *async, int ring,
/* Add the token */
safexcel_hash_token(first_cdesc, len, req->state_sz);
- ctx->base.result_dma = dma_map_single(priv->dev, areq->result,
+ ctx->base.result_dma = dma_map_single(priv->dev, req->state,
req->state_sz, DMA_FROM_DEVICE);
if (dma_mapping_error(priv->dev, ctx->base.result_dma)) {
ret = -EINVAL;
--
2.14.3
