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crypto: atmel-tdes - Remove useless write in Control Register

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As claimed by the datasheet, writing 0 into the Control Register has no
effect. Remove this useless register access.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tudor Ambarus
2019-12-05 09:53:55 +00:00
committed by Herbert Xu
parent e7836518c6
commit 7d0979e2df
1 changed files with 1 additions and 2 deletions
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3
drivers/crypto/atmel-tdes.c
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@@ -265,7 +265,7 @@ static void atmel_tdes_dma_callback(void *data)
static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd) static int atmel_tdes_write_ctrl(struct atmel_tdes_dev *dd)
{ {
int err; int err;
u32 valcr = 0, valmr = TDES_MR_SMOD_PDC; u32 valmr = TDES_MR_SMOD_PDC;
err = atmel_tdes_hw_init(dd); 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)) if ((dd->flags & TDES_FLAGS_ENCRYPT) || (dd->flags & TDES_FLAGS_OFB))
valmr |= TDES_MR_CYPHER_ENC; valmr |= TDES_MR_CYPHER_ENC;
atmel_tdes_write(dd, TDES_CR, valcr);
atmel_tdes_write(dd, TDES_MR, valmr); atmel_tdes_write(dd, TDES_MR, valmr);
atmel_tdes_write_n(dd, TDES_KEY1W1R, dd->ctx->key, atmel_tdes_write_n(dd, TDES_KEY1W1R, dd->ctx->key,