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Date:   Fri, 4 Sep 2020 12:40:11 +0200
From:   Corentin Labbe <clabbe.montjoie@gmail.com>
To:     Herbert Xu <herbert@gondor.apana.org.au>
Cc:     Linux Crypto Mailing List <linux-crypto@vger.kernel.org>
Subject: Re: [PATCH] crypto: sun8i-ce - Fix big-endian read of t_common_ctl
Message-ID: <20200904104011.GA8045@Red>
References: <20200904081122.GA23618@gondor.apana.org.au>
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On Fri, Sep 04, 2020 at 06:11:22PM +1000, Herbert Xu wrote:
> The field t_common_ctl is supposed to be little-endian and indeed
> when it is filled in we've already done a cpu_to_le32 on it.
> However, in sun8i_ce_run_task it is taken as CPU-endian which is
> obviously wrong on BE.  This patch fixes it.
> 
> Fixes: 93c7f4d357de ("crypto: sun8i-ce - enable working on big...")
> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
> 
> diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
> index 138759dc8190..703a60d4e2f6 100644
> --- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
> +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
> @@ -120,7 +120,7 @@ int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
>  	/* Be sure all data is written before enabling the task */
>  	wmb();
>  
> -	v = 1 | (ce->chanlist[flow].tl->t_common_ctl & 0x7F) << 8;
> +	v = 1 | (le32_to_cpu(ce->chanlist[flow].tl->t_common_ctl) & 0x7F) << 8;
>  	writel(v, ce->base + CE_TLR);
>  	mutex_unlock(&ce->mlock);
>  

This patch is in my hash/rng serie, I will resend it today.