As claimed by the datasheet, writing 0 into the Control Register has no
effet. So we remove this useless register access.
Signed-off-by: Cyrille Pitchen <cyrille.pitc...@atmel.com>
---
drivers/crypto/atmel-aes.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index 48407a7f6f61..f1ea9c893561 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -511,7 +511,7 @@ static int atmel_aes_crypt_dma_start(struct atmel_aes_dev
*dd)
static void atmel_aes_write_ctrl(struct atmel_aes_dev *dd, bool use_dma,
const u32 *iv)
{
- u32 valcr = 0, valmr = 0;
+ u32 valmr = 0;
/* MR register must be set before IV registers */
if (dd->ctx->keylen == AES_KEYSIZE_128)
@@ -554,7 +554,6 @@ static void atmel_aes_write_ctrl(struct atmel_aes_dev *dd,
bool use_dma,
valmr |= AES_MR_SMOD_AUTO;
}
- atmel_aes_write(dd, AES_CR, valcr);
atmel_aes_write(dd, AES_MR, valmr);
atmel_aes_write_n(dd, AES_KEYWR(0), dd->ctx->key,
--
1.8.2.2
--
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