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path: root/drivers/s390/crypto/ap_bus.c
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Diffstat (limited to 'drivers/s390/crypto/ap_bus.c')
-rw-r--r--drivers/s390/crypto/ap_bus.c24
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 7e9a72eb2fe0..b987d4619586 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -215,7 +215,7 @@ ap_queue_interruption_control(ap_qid_t qid, void *ind)
register struct ap_queue_status reg1_out asm ("1");
register void *reg2 asm ("2") = ind;
asm volatile(
- ".long 0xb2af0000" /* PQAP(RAPQ) */
+ ".long 0xb2af0000" /* PQAP(AQIC) */
: "+d" (reg0), "+d" (reg1_in), "=d" (reg1_out), "+d" (reg2)
:
: "cc" );
@@ -232,7 +232,7 @@ __ap_query_functions(ap_qid_t qid, unsigned int *functions)
register unsigned long reg2 asm ("2");
asm volatile(
- ".long 0xb2af0000\n"
+ ".long 0xb2af0000\n" /* PQAP(TAPQ) */
"0:\n"
EX_TABLE(0b, 0b)
: "+d" (reg0), "+d" (reg1), "=d" (reg2)
@@ -391,7 +391,7 @@ __ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length,
reg0 |= 0x400000UL;
asm volatile (
- "0: .long 0xb2ad0042\n" /* DQAP */
+ "0: .long 0xb2ad0042\n" /* NQAP */
" brc 2,0b"
: "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3)
: "d" (reg4), "d" (reg5), "m" (*(msgblock *) msg)
@@ -450,7 +450,7 @@ __ap_recv(ap_qid_t qid, unsigned long long *psmid, void *msg, size_t length)
asm volatile(
- "0: .long 0xb2ae0064\n"
+ "0: .long 0xb2ae0064\n" /* DQAP */
" brc 6,0b\n"
: "+d" (reg0), "=d" (reg1), "+d" (reg2),
"+d" (reg4), "+d" (reg5), "+d" (reg6), "+d" (reg7),
@@ -836,12 +836,12 @@ static void __ap_flush_queue(struct ap_device *ap_dev)
list_for_each_entry_safe(ap_msg, next, &ap_dev->pendingq, list) {
list_del_init(&ap_msg->list);
ap_dev->pendingq_count--;
- ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
+ ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
}
list_for_each_entry_safe(ap_msg, next, &ap_dev->requestq, list) {
list_del_init(&ap_msg->list);
ap_dev->requestq_count--;
- ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
+ ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
}
}
@@ -1329,7 +1329,7 @@ static int ap_poll_read(struct ap_device *ap_dev, unsigned long *flags)
continue;
list_del_init(&ap_msg->list);
ap_dev->pendingq_count--;
- ap_dev->drv->receive(ap_dev, ap_msg, ap_dev->reply);
+ ap_msg->receive(ap_dev, ap_msg, ap_dev->reply);
break;
}
if (ap_dev->queue_count > 0)
@@ -1450,10 +1450,10 @@ static int __ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_ms
return -EBUSY;
case AP_RESPONSE_REQ_FAC_NOT_INST:
case AP_RESPONSE_MESSAGE_TOO_BIG:
- ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-EINVAL));
+ ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-EINVAL));
return -EINVAL;
default: /* Device is gone. */
- ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
+ ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
return -ENODEV;
}
} else {
@@ -1471,6 +1471,10 @@ void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg)
unsigned long flags;
int rc;
+ /* For asynchronous message handling a valid receive-callback
+ * is required. */
+ BUG_ON(!ap_msg->receive);
+
spin_lock_bh(&ap_dev->lock);
if (!ap_dev->unregistered) {
/* Make room on the queue by polling for finished requests. */
@@ -1482,7 +1486,7 @@ void ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_msg)
if (rc == -ENODEV)
ap_dev->unregistered = 1;
} else {
- ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
+ ap_msg->receive(ap_dev, ap_msg, ERR_PTR(-ENODEV));
rc = -ENODEV;
}
spin_unlock_bh(&ap_dev->lock);