linux-kernel - [PATCH 3/4] crypto: s5p-sss: Minor code cleanup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180913075859eucas1p2bba2f5ab32fea5c4f832abaacaed6c8b~T5q_dx0q42420924209eucas1p2D@eucas1p2.samsung.com>
Date:   Thu, 13 Sep 2018 09:58:41 +0200
From:   Christoph Manszewski <c.manszewski@...sung.com>
To:     linux-crypto@...r.kernel.org
Cc:     Christoph Manszewski <c.manszewski@...sung.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Vladimir Zapolskiy <vz@...ia.com>,
        Kamil Konieczny <k.konieczny@...tner.samsung.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] crypto: s5p-sss: Minor code cleanup

Modifications in s5p-sss.c:

- remove unnecessary 'goto' statements,

- change uint_8 and uint_32 to u8 and u32 types,

Signed-off-by: Christoph Manszewski <c.manszewski@...sung.com>
---
 drivers/crypto/s5p-sss.c | 54 +++++++++++++++---------------------------------
 1 file changed, 17 insertions(+), 37 deletions(-)

diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
index ce9bd13ea166..817a4b2b71e6 100644
--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -249,8 +249,8 @@ struct s5p_aes_reqctx {
 struct s5p_aes_ctx {
 	struct s5p_aes_dev		*dev;
 
-	uint8_t				aes_key[AES_MAX_KEY_SIZE];
-	uint8_t				nonce[CTR_RFC3686_NONCE_SIZE];
+	u8				aes_key[AES_MAX_KEY_SIZE];
+	u8				nonce[CTR_RFC3686_NONCE_SIZE];
 	int				keylen;
 };
 
@@ -518,46 +518,28 @@ static int s5p_make_sg_cpy(struct s5p_aes_dev *dev, struct scatterlist *src,
 
 static int s5p_set_outdata(struct s5p_aes_dev *dev, struct scatterlist *sg)
 {
-	int err;
-
-	if (!sg->length) {
-		err = -EINVAL;
-		goto exit;
-	}
+	if (!sg->length)
+		return -EINVAL;
 
-	err = dma_map_sg(dev->dev, sg, 1, DMA_FROM_DEVICE);
-	if (!err) {
-		err = -ENOMEM;
-		goto exit;
-	}
+	if (!dma_map_sg(dev->dev, sg, 1, DMA_FROM_DEVICE))
+		return -ENOMEM;
 
 	dev->sg_dst = sg;
-	err = 0;
 
-exit:
-	return err;
+	return 0;
 }
 
 static int s5p_set_indata(struct s5p_aes_dev *dev, struct scatterlist *sg)
 {
-	int err;
-
-	if (!sg->length) {
-		err = -EINVAL;
-		goto exit;
-	}
+	if (!sg->length)
+		return -EINVAL;
 
-	err = dma_map_sg(dev->dev, sg, 1, DMA_TO_DEVICE);
-	if (!err) {
-		err = -ENOMEM;
-		goto exit;
-	}
+	if (!dma_map_sg(dev->dev, sg, 1, DMA_TO_DEVICE))
+		return -ENOMEM;
 
 	dev->sg_src = sg;
-	err = 0;
 
-exit:
-	return err;
+	return 0;
 }
 
 /*
@@ -662,8 +644,7 @@ static irqreturn_t s5p_aes_interrupt(int irq, void *dev_id)
 	bool tx_end = false;
 	bool hx_end = false;
 	unsigned long flags;
-	uint32_t status;
-	u32 st_bits;
+	u32 status, st_bits;
 	int err;
 
 	spin_lock_irqsave(&dev->lock, flags);
@@ -1833,7 +1814,7 @@ static struct ahash_alg algs_sha1_md5_sha256[] = {
 };
 
 static void s5p_set_aes(struct s5p_aes_dev *dev,
-			const uint8_t *key, const uint8_t *iv,
+			const u8 *key, const u8 *iv,
 			unsigned int keylen)
 {
 	void __iomem *keystart;
@@ -1919,7 +1900,7 @@ static int s5p_set_outdata_start(struct s5p_aes_dev *dev,
 static void s5p_aes_crypt_start(struct s5p_aes_dev *dev, unsigned long mode)
 {
 	struct ablkcipher_request *req = dev->req;
-	uint32_t aes_control;
+	u32 aes_control;
 	unsigned long flags;
 	int err;
 	u8 *iv;
@@ -2027,7 +2008,7 @@ static int s5p_aes_handle_req(struct s5p_aes_dev *dev,
 	err = ablkcipher_enqueue_request(&dev->queue, req);
 	if (dev->busy) {
 		spin_unlock_irqrestore(&dev->lock, flags);
-		goto exit;
+		return err;
 	}
 	dev->busy = true;
 
@@ -2035,7 +2016,6 @@ static int s5p_aes_handle_req(struct s5p_aes_dev *dev,
 
 	tasklet_schedule(&dev->tasklet);
 
-exit:
 	return err;
 }
 
@@ -2057,7 +2037,7 @@ static int s5p_aes_crypt(struct ablkcipher_request *req, unsigned long mode)
 }
 
 static int s5p_aes_setkey(struct crypto_ablkcipher *cipher,
-			  const uint8_t *key, unsigned int keylen)
+			  const u8 *key, unsigned int keylen)
 {
 	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
 	struct s5p_aes_ctx *ctx = crypto_tfm_ctx(tfm);
-- 
2.7.4