[S390] cleanup facility list handling

Store the facility list once at system startup with stfl/stfle and
reuse the result for all facility tests.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 8 deletions

diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 91c6028d7b74..8fd8c62455e9 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -154,14 +154,7 @@ static inline int ap_instructions_available(void)
  */
 static int ap_interrupts_available(void)
 {
-        unsigned long long facility_bits[2];
-
-        if (stfle(facility_bits, 2) <= 1)
-                return 0;
-        if (!(facility_bits[0] & (1ULL << 61)) ||
-            !(facility_bits[1] & (1ULL << 62)))
-                return 0;
-        return 1;
+        return test_facility(1) && test_facility(2);
 }
 
 /**