[v2,3/4] crypto: s5p-sss: Minor code cleanup

Commit Message

Christoph Manszewski Sept. 17, 2018, 3:09 p.m. UTC

Modifications in s5p-sss.c:
- remove unnecessary 'goto' statements (making code shorter),
- change uint_8 and uint_32 to u8 and u32 types (for consistency in the
driver and making code shorter),

Signed-off-by: Christoph Manszewski <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
---
 drivers/crypto/s5p-sss.c | 54 +++++++++++++++---------------------------------
 1 file changed, 17 insertions(+), 37 deletions(-)

Comments

Kamil Konieczny Sept. 17, 2018, 3:49 p.m. UTC | #1

On 17.09.2018 17:09, Christoph Manszewski wrote:
> Modifications in s5p-sss.c:
> - remove unnecessary 'goto' statements (making code shorter),
> - change uint_8 and uint_32 to u8 and u32 types (for consistency in the
> driver and making code shorter),
> 
> Signed-off-by: Christoph Manszewski <[e-mail]>
> Reviewed-by: Krzysztof Kozlowski <[e-mail]>

Acked-by: Kamil Konieczny <[e-mail]>

Thanks!
Kamil

Patch

diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
index b7216935236f..ba8f2e2ea88f 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);
@@ -1832,7 +1813,7 @@  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;
@@ -1918,7 +1899,7 @@  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;
@@ -2026,7 +2007,7 @@  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;
 
@@ -2034,7 +2015,6 @@  static int s5p_aes_handle_req(struct s5p_aes_dev *dev,
 
 	tasklet_schedule(&dev->tasklet);
 
-exit:
 	return err;
 }
 
@@ -2056,7 +2036,7 @@  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);