This patch improves the send error path as it wasn't handling all error
cases. A new label is added, and some of the goto are updated to point
to the right labels, so that the code is more robust to errors.
Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>
---
drivers/crypto/inside-secure/safexcel_hash.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
index bb2be12a8f4a..ef3e0c1c0f2c 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -279,7 +279,7 @@ static int safexcel_ahash_send_req(struct crypto_async_request *async, int ring,
sglen, len, ctx->base.ctxr_dma);
if (IS_ERR(cdesc)) {
ret = PTR_ERR(cdesc);
- goto cdesc_rollback;
+ goto unmap_sg;
}
n_cdesc++;
@@ -303,7 +303,7 @@ static int safexcel_ahash_send_req(struct crypto_async_request *async, int ring,
DMA_FROM_DEVICE);
if (dma_mapping_error(priv->dev, req->result_dma)) {
ret = -EINVAL;
- goto cdesc_rollback;
+ goto unmap_sg;
}
/* Add a result descriptor */
@@ -324,6 +324,9 @@ static int safexcel_ahash_send_req(struct crypto_async_request *async, int ring,
return 0;
unmap_result:
+ dma_unmap_single(priv->dev, req->result_dma, req->state_sz,
+ DMA_FROM_DEVICE);
+unmap_sg:
dma_unmap_sg(priv->dev, areq->src, req->nents, DMA_TO_DEVICE);
cdesc_rollback:
for (i = 0; i < n_cdesc; i++)
--
2.14.3
