[PATCH 5/6] crypto: allwinner: Fix dma_map_sg error check
From: Jack Wang <jinpu.wang@ionos.com>
Date: 2022-08-25 07:24:48
dma_map_sg return 0 on error.
Cc: Corentin Labbe <clabbe.montjoie@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chen-Yu Tsai <redacted>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Samuel Holland <samuel@sholland.org>
Cc: Dan Carpenter <redacted>
Cc: Minghao Chi <redacted>
Cc: Peng Wu <redacted>
Cc: Alexey Khoroshilov <redacted>
Cc: linux-crypto@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-sunxi@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
Fixes: 06f751b61329 ("crypto: allwinner - Add sun8i-ce Crypto Engine")
Fixes: d9b45418a917 ("crypto: sun8i-ss - support hash algorithms")
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c | 6 +++---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c | 2 +-
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 4 ++--
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 2 +-
4 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
index 74b4e910a38d..be7f46faef7e 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c@@ -208,7 +208,7 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req if (areq->src == areq->dst) { nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_BIDIRECTIONAL); - if (nr_sgs <= 0 || nr_sgs > MAX_SG) { + if (!nr_sgs || nr_sgs > MAX_SG) { dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs); err = -EINVAL; goto theend_iv;
@@ -216,13 +216,13 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req nr_sgd = nr_sgs; } else { nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_TO_DEVICE); - if (nr_sgs <= 0 || nr_sgs > MAX_SG) { + if (!nr_sgs || nr_sgs > MAX_SG) { dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs); err = -EINVAL; goto theend_iv; } nr_sgd = dma_map_sg(ce->dev, areq->dst, nd, DMA_FROM_DEVICE); - if (nr_sgd <= 0 || nr_sgd > MAX_SG) { + if (!nr_sgd || nr_sgd > MAX_SG) { dev_err(ce->dev, "Invalid sg number %d\n", nr_sgd); err = -EINVAL; goto theend_sgs;
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
index 8b5b9b9d04c3..0e6843ec197f 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c@@ -389,7 +389,7 @@ int sun8i_ce_hash_run(struct crypto_engine *engine, void *breq) cet->t_asym_ctl = 0; nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_TO_DEVICE); - if (nr_sgs <= 0 || nr_sgs > MAX_SG) { + if (!nr_sgs || nr_sgs > MAX_SG) { dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs); err = -EINVAL; goto theend;
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
index 910d6751644c..fdcc98cdecaa 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c@@ -232,13 +232,13 @@ static int sun8i_ss_cipher(struct skcipher_request *areq) nr_sgd = nr_sgs; } else { nr_sgs = dma_map_sg(ss->dev, areq->src, nsgs, DMA_TO_DEVICE); - if (nr_sgs <= 0 || nr_sgs > 8) { + if (!nr_sgs || nr_sgs > 8) { dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs); err = -EINVAL; goto theend_iv; } nr_sgd = dma_map_sg(ss->dev, areq->dst, nsgd, DMA_FROM_DEVICE); - if (nr_sgd <= 0 || nr_sgd > 8) { + if (!nr_sgd || nr_sgd > 8) { dev_err(ss->dev, "Invalid sg number %d\n", nr_sgd); err = -EINVAL; goto theend_sgs;
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
index 36a82b22953c..fcb8c41cc957 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c@@ -527,7 +527,7 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) rctx->method = ss->variant->alg_hash[algt->ss_algo_id]; nr_sgs = dma_map_sg(ss->dev, areq->src, sg_nents(areq->src), DMA_TO_DEVICE); - if (nr_sgs <= 0 || nr_sgs > MAX_SG) { + if (!nr_sgs || nr_sgs > MAX_SG) { dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs); err = -EINVAL; goto theend;
--
2.34.1
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