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| author | Tudor Ambarus <tudor.ambarus@microchip.com> | 2019-12-05 09:53:55 +0000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-12-11 16:46:22 +0800 |
| commit | 7d0979e2dfa8b85a6169d89c3e767c7bde9b599c (patch) | |
| tree | a1e651f104deb3bd5057a4ff5195493d5854bb3d /drivers/crypto/atmel-tdes.c | |
| parent | e7836518c6bc0156e04983aa12f5539062b5bd8f (diff) | |
| download | lwn-7d0979e2dfa8b85a6169d89c3e767c7bde9b599c.tar.gz lwn-7d0979e2dfa8b85a6169d89c3e767c7bde9b599c.zip | |
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 <tudor.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/atmel-tdes.c')
| -rw-r--r-- | drivers/crypto/atmel-tdes.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c index 732524f58d9c..d125927959d8 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, |