[PATCH 09/24] crypto: atmel-aes: remove useless write in the Control Register
From: Cyrille Pitchen <hidden>
Date: 2015-12-17 16:51:29
Also in:
linux-crypto, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
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 <redacted> --- 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