leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

crypto: atmel-tdes - Drop unnecessary passing of tfm

Browse Source 
atmel_tdes_crypt_start() obtained a pointer to tfm from dd,
passed the tfm pointer to atmel_tdes_crypt_{dma,pdc}, and in
the calles we obtained dd back from the tfm. Pass pointer to
dd directly.

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 09:53:58 +00:00 committed by Herbert Xu
parent 848572f817
commit 75eca7a7f2
1 changed files with 8 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/crypto/atmel-tdes.c
View File

@ -384,11 +384,10 @@ static void atmel_tdes_buff_cleanup(struct atmel_tdes_dev *dd)
free_page((unsigned long)dd->buf_in);
}
static int atmel_tdes_crypt_pdc(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
dma_addr_t dma_addr_out, int length)
static int atmel_tdes_crypt_pdc(struct atmel_tdes_dev *dd,
dma_addr_t dma_addr_in,
dma_addr_t dma_addr_out, int length)
{
struct atmel_tdes_ctx *ctx = crypto_tfm_ctx(tfm);
struct atmel_tdes_dev *dd = ctx->dd;
struct atmel_tdes_reqctx *rctx = skcipher_request_ctx(dd->req);
int len32;
@ -428,11 +427,10 @@ static int atmel_tdes_crypt_pdc(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
return 0;
}
static int atmel_tdes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
dma_addr_t dma_addr_out, int length)
static int atmel_tdes_crypt_dma(struct atmel_tdes_dev *dd,
dma_addr_t dma_addr_in,
dma_addr_t dma_addr_out, int length)
{
struct atmel_tdes_ctx *ctx = crypto_tfm_ctx(tfm);
struct atmel_tdes_dev *dd = ctx->dd;
struct atmel_tdes_reqctx *rctx = skcipher_request_ctx(dd->req);
struct scatterlist sg[2];
struct dma_async_tx_descriptor *in_desc, *out_desc;
@ -501,8 +499,6 @@ static int atmel_tdes_crypt_dma(struct crypto_tfm *tfm, dma_addr_t dma_addr_in,
static int atmel_tdes_crypt_start(struct atmel_tdes_dev *dd)
{
struct crypto_tfm *tfm = crypto_skcipher_tfm(
crypto_skcipher_reqtfm(dd->req));
int err, fast = 0, in, out;
size_t count;
dma_addr_t addr_in, addr_out;
@ -558,9 +554,9 @@ static int atmel_tdes_crypt_start(struct atmel_tdes_dev *dd)
dd->total -= count;
if (dd->caps.has_dma)
err = atmel_tdes_crypt_dma(tfm, addr_in, addr_out, count);
err = atmel_tdes_crypt_dma(dd, addr_in, addr_out, count);
else
err = atmel_tdes_crypt_pdc(tfm, addr_in, addr_out, count);
err = atmel_tdes_crypt_pdc(dd, addr_in, addr_out, count);
if (err && (dd->flags & TDES_FLAGS_FAST)) {
dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);