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crypto: hisilicon/sgl - fix the sg buf unmap

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Add data cleared operation for sge data.

Signed-off-by: Kai Ye <yekai13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Kai Ye 2021-04-09 17:04:04 +08:00 committed by Herbert Xu
parent 4b95e17b8f
commit 7e958d301c
1 changed files with 13 additions and 1 deletions
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14
drivers/crypto/hisilicon/sgl.c
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@ -192,6 +192,18 @@ static void update_hw_sgl_sum_sge(struct hisi_acc_hw_sgl *hw_sgl, u16 sum)
hw_sgl->entry_sum_in_chain = cpu_to_le16(sum);
}
static void clear_hw_sgl_sge(struct hisi_acc_hw_sgl *hw_sgl)
{
struct acc_hw_sge *hw_sge = hw_sgl->sge_entries;
int i;
for (i = 0; i < le16_to_cpu(hw_sgl->entry_sum_in_sgl); i++) {
hw_sge[i].page_ctrl = NULL;
hw_sge[i].buf = 0;
hw_sge[i].len = 0;
}
}
/**
* hisi_acc_sg_buf_map_to_hw_sgl - Map a scatterlist to a hw sgl.
* @dev: The device which hw sgl belongs to.
@ -269,7 +281,7 @@ void hisi_acc_sg_buf_unmap(struct device *dev, struct scatterlist *sgl,
return;
dma_unmap_sg(dev, sgl, sg_nents(sgl), DMA_BIDIRECTIONAL);
clear_hw_sgl_sge(hw_sgl);
hw_sgl->entry_sum_in_chain = 0;
hw_sgl->entry_sum_in_sgl = 0;
hw_sgl->entry_length_in_sgl = 0;