diff options
Diffstat (limited to 'drivers/crypto/caam/caamalg_qi.c')
| -rw-r--r-- | drivers/crypto/caam/caamalg_qi.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c index c0d55310aade..7bce97884663 100644 --- a/drivers/crypto/caam/caamalg_qi.c +++ b/drivers/crypto/caam/caamalg_qi.c @@ -802,7 +802,8 @@ static void caam_unmap(struct device *dev, struct scatterlist *src, if (dst != src) { if (src_nents) dma_unmap_sg(dev, src, src_nents, DMA_TO_DEVICE); - dma_unmap_sg(dev, dst, dst_nents, DMA_FROM_DEVICE); + if (dst_nents) + dma_unmap_sg(dev, dst, dst_nents, DMA_FROM_DEVICE); } else { dma_unmap_sg(dev, src, src_nents, DMA_BIDIRECTIONAL); } @@ -955,13 +956,19 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req, mapped_src_nents = 0; } - mapped_dst_nents = dma_map_sg(qidev, req->dst, dst_nents, - DMA_FROM_DEVICE); - if (unlikely(!mapped_dst_nents)) { - dev_err(qidev, "unable to map destination\n"); - dma_unmap_sg(qidev, req->src, src_nents, DMA_TO_DEVICE); - qi_cache_free(edesc); - return ERR_PTR(-ENOMEM); + if (dst_nents) { + mapped_dst_nents = dma_map_sg(qidev, req->dst, + dst_nents, + DMA_FROM_DEVICE); + if (unlikely(!mapped_dst_nents)) { + dev_err(qidev, "unable to map destination\n"); + dma_unmap_sg(qidev, req->src, src_nents, + DMA_TO_DEVICE); + qi_cache_free(edesc); + return ERR_PTR(-ENOMEM); + } + } else { + mapped_dst_nents = 0; } } |