diff options
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index b15013234c77..78c99ae42b1f 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -271,8 +271,11 @@ static int ap_query_queue(ap_qid_t qid, int *queue_depth, int *device_type, *facilities = (unsigned int)(info >> 32); /* Update maximum domain id */ nd = (info >> 16) & 0xff; + /* if N bit is available, z13 and newer */ if ((info & (1UL << 57)) && nd > 0) ap_max_domain_id = nd; + else /* older machine types */ + ap_max_domain_id = 15; switch (*device_type) { /* For CEX2 and CEX3 the available functions * are not refrected by the facilities bits. |