From 7d0979e2dfa8b85a6169d89c3e767c7bde9b599c Mon Sep 17 00:00:00 2001 From: Tudor Ambarus Date: Thu, 5 Dec 2019 09:53:55 +0000 Subject: [PATCH] crypto: atmel-tdes - Remove useless write in Control Register As claimed by the datasheet, writing 0 into the Control Register has no effect. Remove this useless register access. Signed-off-by: Tudor Ambarus Signed-off-by: Herbert Xu --- drivers/crypto/atmel-tdes.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c index 732524f..d125927 100644 --- a/drivers/crypto/atmel-tdes.c +++ b/drivers/crypto/atmel-tdes.c @@ -265,7 +265,7 @@ static void atmel_tdes_dma_callback(void *data) static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd) { int err; - u32 valcr = 0, valmr = TDES_MR_SMOD_PDC; + u32 valmr = TDES_MR_SMOD_PDC; err = atmel_tdes_hw_init(dd); @@ -307,7 +307,6 @@ static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd) if ((dd->flags & TDES_FLAGS_ENCRYPT) || (dd->flags & TDES_FLAGS_OFB)) valmr |= TDES_MR_CYPHER_ENC; - atmel_tdes_write(dd, TDES_CR, valcr); atmel_tdes_write(dd, TDES_MR, valmr); atmel_tdes_write_n(dd, TDES_KEY1W1R, dd->ctx->key, -- 2.7.4