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s390/crypto: prng: Use -ENODEV instead of -EOPNOTSUPP 

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.

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
David Hildenbrand 2019-06-12 15:33:05 +02:00 committed by Heiko Carstens
parent 1c0908fcda
commit ba6a98fe79
1 changed files with 2 additions and 2 deletions
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4
arch/s390/crypto/prng.c
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@ -824,7 +824,7 @@ static int __init prng_init(void)
/* check if the CPU has a PRNG */ /* check if the CPU has a PRNG */
if (!cpacf_query_func(CPACF_KMC, CPACF_KMC_PRNG)) if (!cpacf_query_func(CPACF_KMC, CPACF_KMC_PRNG))
return -EOPNOTSUPP; return -ENODEV;
/* check if TRNG subfunction is available */ /* check if TRNG subfunction is available */
if (cpacf_query_func(CPACF_PRNO, CPACF_PRNO_TRNG)) if (cpacf_query_func(CPACF_PRNO, CPACF_PRNO_TRNG))
@ -837,7 +837,7 @@ static int __init prng_init(void)
if (prng_mode == PRNG_MODE_SHA512) { if (prng_mode == PRNG_MODE_SHA512) {
pr_err("The prng module cannot " pr_err("The prng module cannot "
"start in SHA-512 mode\n"); "start in SHA-512 mode\n");
return -EOPNOTSUPP; return -ENODEV;
} }
prng_mode = PRNG_MODE_TDES; prng_mode = PRNG_MODE_TDES;
} else } else