diff options
| -rw-r--r-- | drivers/crypto/sahara.c | 66 |
1 files changed, 13 insertions, 53 deletions
diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c index cea241125938..804c0f5ce63a 100644 --- a/drivers/crypto/sahara.c +++ b/drivers/crypto/sahara.c @@ -173,7 +173,6 @@ struct sahara_aes_reqctx { * @sg_in_idx: number of hw links * @in_sg: scatterlist for input data * @in_sg_chain: scatterlists for chained input data - * @in_sg_chained: specifies if chained scatterlists are used or not * @total: total number of bytes for transfer * @last: is this the last block * @first: is this the first block @@ -191,7 +190,6 @@ struct sahara_sha_reqctx { unsigned int sg_in_idx; struct scatterlist *in_sg; struct scatterlist in_sg_chain[2]; - bool in_sg_chained; size_t total; unsigned int last; unsigned int first; @@ -801,38 +799,19 @@ static int sahara_sha_hw_links_create(struct sahara_dev *dev, return -EINVAL; } - if (rctx->in_sg_chained) { - i = start; - sg = dev->in_sg; - while (sg) { - ret = dma_map_sg(dev->device, sg, 1, - DMA_TO_DEVICE); - if (!ret) - return -EFAULT; - - dev->hw_link[i]->len = sg->length; - dev->hw_link[i]->p = sg->dma_address; + sg = dev->in_sg; + ret = dma_map_sg(dev->device, dev->in_sg, dev->nb_in_sg, DMA_TO_DEVICE); + if (!ret) + return -EFAULT; + + for (i = start; i < dev->nb_in_sg + start; i++) { + dev->hw_link[i]->len = sg->length; + dev->hw_link[i]->p = sg->dma_address; + if (i == (dev->nb_in_sg + start - 1)) { + dev->hw_link[i]->next = 0; + } else { dev->hw_link[i]->next = dev->hw_phys_link[i + 1]; sg = sg_next(sg); - i += 1; - } - dev->hw_link[i-1]->next = 0; - } else { - sg = dev->in_sg; - ret = dma_map_sg(dev->device, dev->in_sg, dev->nb_in_sg, - DMA_TO_DEVICE); - if (!ret) - return -EFAULT; - - for (i = start; i < dev->nb_in_sg + start; i++) { - dev->hw_link[i]->len = sg->length; - dev->hw_link[i]->p = sg->dma_address; - if (i == (dev->nb_in_sg + start - 1)) { - dev->hw_link[i]->next = 0; - } else { - dev->hw_link[i]->next = dev->hw_phys_link[i + 1]; - sg = sg_next(sg); - } } } @@ -980,7 +959,6 @@ static int sahara_sha_prepare_request(struct ahash_request *req) rctx->total = req->nbytes + rctx->buf_cnt; rctx->in_sg = rctx->in_sg_chain; - rctx->in_sg_chained = true; req->src = rctx->in_sg_chain; /* only data from previous operation */ } else if (rctx->buf_cnt) { @@ -991,13 +969,11 @@ static int sahara_sha_prepare_request(struct ahash_request *req) /* buf was copied into rembuf above */ sg_init_one(rctx->in_sg, rctx->rembuf, rctx->buf_cnt); rctx->total = rctx->buf_cnt; - rctx->in_sg_chained = false; /* no data from previous operation */ } else { rctx->in_sg = req->src; rctx->total = req->nbytes; req->src = rctx->in_sg; - rctx->in_sg_chained = false; } /* on next call, we only have the remaining data in the buffer */ @@ -1006,23 +982,6 @@ static int sahara_sha_prepare_request(struct ahash_request *req) return -EINPROGRESS; } -static void sahara_sha_unmap_sg(struct sahara_dev *dev, - struct sahara_sha_reqctx *rctx) -{ - struct scatterlist *sg; - - if (rctx->in_sg_chained) { - sg = dev->in_sg; - while (sg) { - dma_unmap_sg(dev->device, sg, 1, DMA_TO_DEVICE); - sg = sg_next(sg); - } - } else { - dma_unmap_sg(dev->device, dev->in_sg, dev->nb_in_sg, - DMA_TO_DEVICE); - } -} - static int sahara_sha_process(struct ahash_request *req) { struct sahara_dev *dev = dev_ptr; @@ -1062,7 +1021,8 @@ static int sahara_sha_process(struct ahash_request *req) } if (rctx->sg_in_idx) - sahara_sha_unmap_sg(dev, rctx); + dma_unmap_sg(dev->device, dev->in_sg, dev->nb_in_sg, + DMA_TO_DEVICE); memcpy(rctx->context, dev->context_base, rctx->context_size); |