[PATCH 07/19] crypto: sun8i-ss: test error before assigning

Corentin Labbe
2022-03-17T20:56:47Z

The first thing we should do after dma_map_single() is to test the
result.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
index eaa0bbaf5581..49e2e947b36b 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
@@ -420,15 +420,15 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq)
}

addr_pad = dma_map_single(ss->dev, pad, j * 4, DMA_TO_DEVICE);
- rctx->t_src[i].addr = addr_pad;
- rctx->t_src[i].len = j;
- rctx->t_dst[i].addr = addr_res;
- rctx->t_dst[i].len = digestsize / 4;
if (dma_mapping_error(ss->dev, addr_pad)) {
dev_err(ss->dev, "DMA error on padding SG\n");
err = -EINVAL;
goto theend;
}
+ rctx->t_src[i].addr = addr_pad;
+ rctx->t_src[i].len = j;
+ rctx->t_dst[i].addr = addr_res;
+ rctx->t_dst[i].len = digestsize / 4;

err = sun8i_ss_run_hash_task(ss, rctx, crypto_tfm_alg_name(areq->base.tfm));

--
2.34.1