diff options
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/caam/caamalg.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 662fe94cb2f8..05d4690351b9 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -1798,7 +1798,7 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc( gfp_t flags = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC; - int src_nents, dst_nents = 0, sec4_sg_bytes; + int src_nents, dst_nents, sec4_sg_bytes; struct ablkcipher_edesc *edesc; dma_addr_t iv_dma = 0; bool iv_contig = false; @@ -1808,9 +1808,6 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc( src_nents = sg_count(req->src, req->nbytes); - if (unlikely(req->dst != req->src)) - dst_nents = sg_count(req->dst, req->nbytes); - if (likely(req->src == req->dst)) { sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1, DMA_BIDIRECTIONAL); @@ -1818,6 +1815,8 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc( dev_err(jrdev, "unable to map source\n"); return ERR_PTR(-ENOMEM); } + + dst_nents = src_nents; } else { sgc = dma_map_sg(jrdev, req->src, src_nents ? : 1, DMA_TO_DEVICE); @@ -1826,6 +1825,7 @@ static struct ablkcipher_edesc *ablkcipher_giv_edesc_alloc( return ERR_PTR(-ENOMEM); } + dst_nents = sg_count(req->dst, req->nbytes); sgc = dma_map_sg(jrdev, req->dst, dst_nents ? : 1, DMA_FROM_DEVICE); if (unlikely(!sgc)) { |