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>

diff --git a/arch/s390/crypto/prng.c b/arch/s390/crypto/prng.c
index 12cca46..d977643 100644 (file)
--- a/arch/s390/crypto/prng.c
+++ b/arch/s390/crypto/prng.c
@@ -824,7 +824,7 @@ static int __init prng_init(void)
 
        /* check if the CPU has a PRNG */
        if (!cpacf_query_func(CPACF_KMC, CPACF_KMC_PRNG))
-               return -EOPNOTSUPP;
+               return -ENODEV;
 
        /* check if TRNG subfunction is available */
        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) {
                                pr_err("The prng module cannot "
                                       "start in SHA-512 mode\n");
-                               return -EOPNOTSUPP;
+                               return -ENODEV;
                        }
                        prng_mode = PRNG_MODE_TDES;
                } else