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Subject[PATCH 2/2] crypto: atmel-aes - Change data type for "lastc" buffer
Date
From: Tudor Ambarus <tudor.ambarus@microchip.com>

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>
---
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
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