diff options
| -rw-r--r-- | arch/s390/include/asm/ap.h | 10 | ||||
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 2 |
2 files changed, 6 insertions, 6 deletions
diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h index 046e044a48d0..887494aa164f 100644 --- a/arch/s390/include/asm/ap.h +++ b/arch/s390/include/asm/ap.h @@ -49,20 +49,20 @@ struct ap_queue_status { /** * ap_intructions_available() - Test if AP instructions are available. * - * Returns 0 if the AP instructions are installed. + * Returns 1 if the AP instructions are installed, otherwise 0. */ static inline int ap_instructions_available(void) { register unsigned long reg0 asm ("0") = AP_MKQID(0, 0); - register unsigned long reg1 asm ("1") = -ENODEV; - register unsigned long reg2 asm ("2"); + register unsigned long reg1 asm ("1") = 0; + register unsigned long reg2 asm ("2") = 0; asm volatile( " .long 0xb2af0000\n" /* PQAP(TAPQ) */ - "0: la %0,0\n" + "0: la %0,1\n" "1:\n" EX_TABLE(0b, 1b) - : "+d" (reg1), "=d" (reg2) + : "+d" (reg1), "+d" (reg2) : "d" (reg0) : "cc"); return reg1; diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index bf27fc4d1335..7b9a493a3e51 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -1201,7 +1201,7 @@ static int __init ap_module_init(void) if (rc) return rc; - if (ap_instructions_available() != 0) { + if (!ap_instructions_available()) { pr_warn("The hardware system does not support AP instructions\n"); return -ENODEV; } |