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[RESEND] crypto: atmel-aes: use swap()

Message ID 20210722170827.GA4362@pc
State Accepted
Commit 089015d36127f2f620c7a1dca28449f676654850
Headers show
Series [RESEND] crypto: atmel-aes: use swap() | expand

Commit Message

Salah Triki July 22, 2021, 5:08 p.m. UTC
Use swap() instead of implementing it in order to make code more clean.

Signed-off-by: Salah Triki <salah.triki@gmail.com>
---
 drivers/crypto/atmel-aes.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

Comments

Tudor Ambarus July 23, 2021, 4:24 a.m. UTC | #1
On 7/22/21 8:08 PM, Salah Triki wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe

> 

> Use swap() instead of implementing it in order to make code more clean.

> 

> Signed-off-by: Salah Triki <salah.triki@gmail.com>


Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>


> ---

>  drivers/crypto/atmel-aes.c | 8 ++------

>  1 file changed, 2 insertions(+), 6 deletions(-)

> 

> diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c

> index b1d286004295..60041022c4f5 100644

> --- a/drivers/crypto/atmel-aes.c

> +++ b/drivers/crypto/atmel-aes.c

> @@ -1819,12 +1819,8 @@ static int atmel_aes_xts_process_data(struct atmel_aes_dev *dd)

>          * the order of the ciphered tweak bytes need to be reversed before

>          * writing them into the ODATARx registers.

>          */

> -       for (i = 0; i < AES_BLOCK_SIZE/2; ++i) {

> -               u8 tmp = tweak_bytes[AES_BLOCK_SIZE - 1 - i];

> -

> -               tweak_bytes[AES_BLOCK_SIZE - 1 - i] = tweak_bytes[i];

> -               tweak_bytes[i] = tmp;

> -       }

> +       for (i = 0; i < AES_BLOCK_SIZE/2; ++i)

> +               swap(tweak_bytes[i], tweak_bytes[AES_BLOCK_SIZE - 1 - i]);

> 

>         /* Process the data. */

>         atmel_aes_write_ctrl(dd, use_dma, NULL);

> --

> 2.25.1

>
Tudor Ambarus July 23, 2021, 4:31 a.m. UTC | #2
On 7/22/21 8:08 PM, Salah Triki wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe

> 

> Use swap() instead of implementing it in order to make code more clean.

> 

> Signed-off-by: Salah Triki <salah.triki@gmail.com>

> ---

>  drivers/crypto/atmel-aes.c | 8 ++------

>  1 file changed, 2 insertions(+), 6 deletions(-)

> 

> diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c

> index b1d286004295..60041022c4f5 100644

> --- a/drivers/crypto/atmel-aes.c

> +++ b/drivers/crypto/atmel-aes.c

> @@ -1819,12 +1819,8 @@ static int atmel_aes_xts_process_data(struct atmel_aes_dev *dd)

>          * the order of the ciphered tweak bytes need to be reversed before

>          * writing them into the ODATARx registers.

>          */

> -       for (i = 0; i < AES_BLOCK_SIZE/2; ++i) {

> -               u8 tmp = tweak_bytes[AES_BLOCK_SIZE - 1 - i];

> -

> -               tweak_bytes[AES_BLOCK_SIZE - 1 - i] = tweak_bytes[i];

> -               tweak_bytes[i] = tmp;

> -       }

> +       for (i = 0; i < AES_BLOCK_SIZE/2; ++i)


There could have been spaces around that '/', but I see it was kept as it was
before. It's fine either way.
 
> +               swap(tweak_bytes[i], tweak_bytes[AES_BLOCK_SIZE - 1 - i]);

> 

>         /* Process the data. */

>         atmel_aes_write_ctrl(dd, use_dma, NULL);

> --

> 2.25.1

>
Herbert Xu July 30, 2021, 3:11 a.m. UTC | #3
On Thu, Jul 22, 2021 at 06:08:27PM +0100, Salah Triki wrote:
> Use swap() instead of implementing it in order to make code more clean.

> 

> Signed-off-by: Salah Triki <salah.triki@gmail.com>

> ---

>  drivers/crypto/atmel-aes.c | 8 ++------

>  1 file changed, 2 insertions(+), 6 deletions(-)


Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
diff mbox series

Patch

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index b1d286004295..60041022c4f5 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -1819,12 +1819,8 @@  static int atmel_aes_xts_process_data(struct atmel_aes_dev *dd)
 	 * the order of the ciphered tweak bytes need to be reversed before
 	 * writing them into the ODATARx registers.
 	 */
-	for (i = 0; i < AES_BLOCK_SIZE/2; ++i) {
-		u8 tmp = tweak_bytes[AES_BLOCK_SIZE - 1 - i];
-
-		tweak_bytes[AES_BLOCK_SIZE - 1 - i] = tweak_bytes[i];
-		tweak_bytes[i] = tmp;
-	}
+	for (i = 0; i < AES_BLOCK_SIZE/2; ++i)
+		swap(tweak_bytes[i], tweak_bytes[AES_BLOCK_SIZE - 1 - i]);
 
 	/* Process the data. */
 	atmel_aes_write_ctrl(dd, use_dma, NULL);