diff options
Diffstat (limited to 'drivers/crypto/hisilicon/sgl.c')
| -rw-r--r-- | drivers/crypto/hisilicon/sgl.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/crypto/hisilicon/sgl.c b/drivers/crypto/hisilicon/sgl.c index 012023c347b1..0e8c7e324fb4 100644 --- a/drivers/crypto/hisilicon/sgl.c +++ b/drivers/crypto/hisilicon/sgl.c @@ -202,18 +202,21 @@ hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev, dma_addr_t curr_sgl_dma = 0; struct acc_hw_sge *curr_hw_sge; struct scatterlist *sg; - int i, ret, sg_n; + int i, sg_n, sg_n_mapped; if (!dev || !sgl || !pool || !hw_sgl_dma) return ERR_PTR(-EINVAL); sg_n = sg_nents(sgl); - if (sg_n > pool->sge_nr) + + sg_n_mapped = dma_map_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL); + if (!sg_n_mapped) return ERR_PTR(-EINVAL); - ret = dma_map_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL); - if (!ret) + if (sg_n_mapped > pool->sge_nr) { + dma_unmap_sg(dev, sgl, sg_n, DMA_BIDIRECTIONAL); return ERR_PTR(-EINVAL); + } curr_hw_sgl = acc_get_sgl(pool, index, &curr_sgl_dma); if (IS_ERR(curr_hw_sgl)) { @@ -224,7 +227,7 @@ hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev, curr_hw_sgl->entry_length_in_sgl = cpu_to_le16(pool->sge_nr); curr_hw_sge = curr_hw_sgl->sge_entries; - for_each_sg(sgl, sg, sg_n, i) { + for_each_sg(sgl, sg, sg_n_mapped, i) { sg_map_to_hw_sg(sg, curr_hw_sge); inc_hw_sgl_sge(curr_hw_sgl); curr_hw_sge++; @@ -260,7 +263,3 @@ void hisi_acc_sg_buf_unmap(struct device *dev, struct scatterlist *sgl, hw_sgl->entry_length_in_sgl = 0; } EXPORT_SYMBOL_GPL(hisi_acc_sg_buf_unmap); - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Zhou Wang <wangzhou1@hisilicon.com>"); -MODULE_DESCRIPTION("HiSilicon Accelerator SGL support"); |