From: Kai Ye <yekai13@huawei.com>
To: <herbert@gondor.apana.org.au>
Cc: <linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<yekai13@huawei.com>
Subject: [PATCH v3 5/5] crypto: hisilicon/sgl - fix the sg buf unmap
Date: Fri, 9 Apr 2021 17:04:04 +0800 [thread overview]
Message-ID: <1617959044-11023-6-git-send-email-yekai13@huawei.com> (raw)
In-Reply-To: <1617959044-11023-1-git-send-email-yekai13@huawei.com>
Add data cleared operation for sge data.
Signed-off-by: Kai Ye <yekai13@huawei.com>
---
drivers/crypto/hisilicon/sgl.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/hisilicon/sgl.c b/drivers/crypto/hisilicon/sgl.c
index 7f11e41..0572737 100644
--- a/drivers/crypto/hisilicon/sgl.c
+++ b/drivers/crypto/hisilicon/sgl.c
@@ -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;
--
2.8.1
next prev parent reply other threads:[~2021-04-09 9:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-09 9:03 [PATCH v3 0/5] bug fix and clear coding style Kai Ye
2021-04-09 9:04 ` [PATCH v3 1/5] crypto: hisilicon/sgl - add a comment for block size initialization Kai Ye
2021-04-09 9:04 ` [PATCH v3 2/5] crypto: hisilicon/sgl - delete unneeded variable initialization Kai Ye
2021-04-09 9:04 ` [PATCH v3 3/5] crypto: hisilicon/sgl - add some dfx logs Kai Ye
2021-04-09 9:04 ` [PATCH v3 4/5] crypto: hisilicon/sgl - fix the soft sg map to hardware sg Kai Ye
2021-04-09 9:04 ` Kai Ye [this message]
2021-04-16 11:32 ` [PATCH v3 0/5] bug fix and clear coding style Herbert Xu
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