linux-kernel - Re: [PATCH] crypto: caam: blob

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Date:   Thu, 8 Dec 2022 16:27:51 +0100
From:   Ahmad Fatoum <a.fatoum@...gutronix.de>
To:     Nikolaus Voss <nikolaus.voss@...g-streit.com>,
        Horia Geanta <horia.geanta@....com>,
        Pankaj Gupta <pankaj.gupta@....com>,
        Gaurav Jain <gaurav.jain@....com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        David Gstir <david@...ma-star.at>,
        Steffen Trumtrar <s.trumtrar@...gutronix.de>,
        Nikolaus Voss <nv@...n.de>
Cc:     linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto: caam: blob_gen.c: fix CAAM io mem access

On 05.12.22 08:58, Nikolaus Voss wrote:
> IO memory access has to be done with accessors defined in caam/regs.h
> as there are little-endian architectures with a big-endian CAAM unit.
> 
> Fixes ("crypto: caam: blob_gen.c: warn if key is insecure")

@Herbert, is there a stable commit revision Nikolaus could reference here?

> Signed-off-by: Nikolaus Voss <nikolaus.voss@...g-streit.com>

LGTM.

Reviewed-by: Ahmad Fatoum <a.fatoum@...gutronix.de>

> ---
>  drivers/crypto/caam/blob_gen.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/crypto/caam/blob_gen.c b/drivers/crypto/caam/blob_gen.c
> index 1f65df489847..f46b161d2cda 100644
> --- a/drivers/crypto/caam/blob_gen.c
> +++ b/drivers/crypto/caam/blob_gen.c
> @@ -104,7 +104,7 @@ int caam_process_blob(struct caam_blob_priv *priv,
>  	}
>  
>  	ctrlpriv = dev_get_drvdata(jrdev->parent);
> -	moo = FIELD_GET(CSTA_MOO, ioread32(&ctrlpriv->ctrl->perfmon.status));
> +	moo = FIELD_GET(CSTA_MOO, rd_reg32(&ctrlpriv->ctrl->perfmon.status));
>  	if (moo != CSTA_MOO_SECURE && moo != CSTA_MOO_TRUSTED)
>  		dev_warn(jrdev,
>  			 "using insecure test key, enable HAB to use unique device key!\n");

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