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crypto: atmel-aes - use swap() 

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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Salah Triki 2021-07-22 18:08:27 +01:00 committed by Herbert Xu
parent 0469dede0e
commit 089015d361
1 changed files with 2 additions and 6 deletions
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8
drivers/crypto/atmel-aes.c
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@ -1859,12 +1859,8 @@ 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);