linux-kernel - Re: [PATCH v2 2/4] s390/crypto: ghash: Use -ENODEV instead of -EOPNOTSUPP

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Message-Id: <9853af8c-fa55-8128-fffb-b48579174e67@linux.ibm.com>
Date:   Wed, 12 Jun 2019 12:31:42 +0200
From:   Harald Freudenberger <freude@...ux.ibm.com>
To:     David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org
Cc:     linux-s390@...r.kernel.org, linux-crypto@...r.kernel.org,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Cornelia Huck <cohuck@...hat.com>
Subject: Re: [PATCH v2 2/4] s390/crypto: ghash: Use -ENODEV instead of
 -EOPNOTSUPP

On 12.06.19 12:22, David Hildenbrand wrote:
> Let's use the error value that is typically used if HW support is not
> available when trying to load a module - this is also what systemd's
> systemd-modules-load.service expects.
>
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---
>  arch/s390/crypto/ghash_s390.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/s390/crypto/ghash_s390.c b/arch/s390/crypto/ghash_s390.c
> index 86aed30fad3a..eeeb6a7737a4 100644
> --- a/arch/s390/crypto/ghash_s390.c
> +++ b/arch/s390/crypto/ghash_s390.c
> @@ -137,7 +137,7 @@ static struct shash_alg ghash_alg = {
>  static int __init ghash_mod_init(void)
>  {
>  	if (!cpacf_query_func(CPACF_KIMD, CPACF_KIMD_GHASH))
> -		return -EOPNOTSUPP;
> +		return -ENODEV;
>  
>  	return crypto_register_shash(&ghash_alg);
>  }
fine with me
Reviewed-by: Harald Freudenberger <freude@...ux.ibm.com>