linux-kernel - Re: [RESEND PATCH 07/10] crypto: sa2ul: Add hmac(sha1) HMAC algorithm support

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Date:   Thu, 27 Jun 2019 22:14:12 -0700
From:   Eric Biggers <ebiggers@...nel.org>
To:     Keerthy <j-keerthy@...com>
Cc:     herbert@...dor.apana.org.au, davem@...emloft.net,
        robh+dt@...nel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        t-kristo@...com, linux-crypto@...r.kernel.org, nm@...com
Subject: Re: [RESEND PATCH 07/10] crypto: sa2ul: Add hmac(sha1) HMAC
 algorithm support

On Fri, Jun 28, 2019 at 09:57:42AM +0530, Keerthy wrote:
> +static int sa_sham_update(struct ahash_request *req)
> +{
> +	return -ENOTSUPP;
> +}
> +
> +static int sa_sham_final(struct ahash_request *req)
> +{
> +	return sa_sham_digest(req);
> +}
> +
> +static int sa_sham_finup(struct ahash_request *req)
> +{
> +	return sa_sham_digest(req);
> +}

You can't just not support update().  You need to support update().

- Eric