crypto: atmel-aes - Change data type for "lastc" buffer

In case of in-place decryption, the "lastc" buffer is used to copy
the last ciphertext block before the decryption of the message. It
is later used to update the req->iv of the skcipher_request.

"lastc" variable is not used to interact with the hardware, there
is no restriction to be of type "u32". Change the type of "lastc"
to "u8".

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index 3c88c16..9109250 100644 (file)
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -155,7 +155,7 @@ struct atmel_aes_authenc_ctx {
 
 struct atmel_aes_reqctx {
        unsigned long           mode;
-       u32                     lastc[AES_BLOCK_SIZE / sizeof(u32)];
+       u8                      lastc[AES_BLOCK_SIZE];
 };
 
 #if IS_ENABLED(CONFIG_CRYPTO_DEV_ATMEL_AUTHENC)