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crypto: atmel-aes - remove useless AES_FLAGS_DMA flag 

Since the 'done' task code was split into atmel_aes_cpu_complete() and
atmel_aes_dma_complete(), the AES_FLAGS_DMA flag has become useless.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Cyrille Pitchen 2015-12-17 17:48:45 +01:00 committed by Herbert Xu
parent 13c7f876c2
commit 820599a0ea
1 changed files with 14 additions and 21 deletions
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35
drivers/crypto/atmel-aes.c
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@ -66,7 +66,6 @@
#define AES_FLAGS_INIT BIT(2)
#define AES_FLAGS_BUSY BIT(3)
#define AES_FLAGS_DMA BIT(4)
#define AES_FLAGS_FAST BIT(5)
#define AES_FLAGS_PERSISTENT (AES_FLAGS_INIT | AES_FLAGS_BUSY)
@ -393,8 +392,6 @@ static int atmel_aes_crypt_dma(struct atmel_aes_dev *dd,
dmaengine_slave_config(dd->dma_lch_in.chan, &dd->dma_lch_in.dma_conf);
dmaengine_slave_config(dd->dma_lch_out.chan, &dd->dma_lch_out.dma_conf);
dd->flags |= AES_FLAGS_DMA;
sg_init_table(&sg[0], 1);
sg_dma_address(&sg[0]) = dma_addr_in;
sg_dma_len(&sg[0]) = length;
@ -433,8 +430,6 @@ static int atmel_aes_crypt_cpu_start(struct atmel_aes_dev *dd)
{
struct ablkcipher_request *req = ablkcipher_request_cast(dd->areq);
dd->flags &= ~AES_FLAGS_DMA;
dma_sync_single_for_cpu(dd->dev, dd->dma_addr_in,
dd->dma_size, DMA_TO_DEVICE);
dma_sync_single_for_cpu(dd->dev, dd->dma_addr_out,
@ -642,25 +637,23 @@ static int atmel_aes_start(struct atmel_aes_dev *dd)
static int atmel_aes_crypt_dma_stop(struct atmel_aes_dev *dd)
{
int err = -EINVAL;
int err = 0;
size_t count;
if (dd->flags & AES_FLAGS_DMA) {
err = 0;
if (dd->flags & AES_FLAGS_FAST) {
dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_FROM_DEVICE);
dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
} else {
dma_sync_single_for_cpu(dd->dev, dd->dma_addr_out,
dd->dma_size, DMA_FROM_DEVICE);
if (dd->flags & AES_FLAGS_FAST) {
dma_unmap_sg(dd->dev, dd->out_sg, 1, DMA_FROM_DEVICE);
dma_unmap_sg(dd->dev, dd->in_sg, 1, DMA_TO_DEVICE);
} else {
dma_sync_single_for_cpu(dd->dev, dd->dma_addr_out,
dd->dma_size, DMA_FROM_DEVICE);
/* copy data */
count = atmel_aes_sg_copy(&dd->out_sg, &dd->out_offset,
dd->buf_out, dd->buflen, dd->dma_size, 1);
if (count != dd->dma_size) {
err = -EINVAL;
pr_err("not all data converted: %zu\n", count);
}
/* copy data */
count = atmel_aes_sg_copy(&dd->out_sg, &dd->out_offset,
dd->buf_out, dd->buflen,
dd->dma_size, 1);
if (count != dd->dma_size) {
err = -EINVAL;
pr_err("not all data converted: %zu\n", count);
}
}