[PATCH 2/2] crypto: atmel-aes - Change data type for "lastc" buffer

[Tudor.Ambarus]

From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>

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@xxxxxxxxxxxxx>
---
 drivers/crypto/atmel-aes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index 3c88c164c3dc..91092504bc96 100644
--- 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)
-- 
2.9.5