linux-kernel - Re: [PATCH v2 5/5] crypto: hisilicon/sgl

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Date:   Fri, 9 Apr 2021 17:43:49 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Kai Ye <yekai13@...wei.com>
Cc:     linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        wangzhou1@...ilicon.com
Subject: Re: [PATCH v2 5/5] crypto: hisilicon/sgl - fix the sg buf unmap

On Tue, Mar 30, 2021 at 03:39:06PM +0800, Kai Ye wrote:
> Add clear data operation for sge data.
> 
> Signed-off-by: Kai Ye <yekai13@...wei.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 c618aaf..7a58ab3 100644
> --- a/drivers/crypto/hisilicon/sgl.c
> +++ b/drivers/crypto/hisilicon/sgl.c
> @@ -189,6 +189,18 @@ 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 < hw_sgl->entry_sum_in_sgl; i++) {
> +		hw_sge[i].page_ctrl = NULL;
> +		hw_sge[i].buf = 0;
> +		hw_sge[i].len = 0;
> +	}
> +}

This causes a new sparse warning:

  CHECK   ../drivers/crypto/hisilicon/sgl.c
  ../drivers/crypto/hisilicon/sgl.c:200:31: warning: restricted __le16 degrades to integer

Please fix.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt