Commit 2bc53b80 authored Nov 27, 2015 by Ingo Tuchscherer Committed by Martin Schwidefsky Nov 27, 2015

s390/zcrypt: Fix AP queue handling if queue is full

When the AP queue depth of requests was reached additional requests
have been ignored. These request are stuck in the request queue.

The AP queue handling now push the next waiting request into the
queue after fetching a previous serviced and finished reply.

Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent 78c4a49a

drivers/s390/crypto/ap_bus.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -599,8 +599,10 @@ static enum ap_wait ap_sm_read(struct ap_device *ap_dev)
		status = ap_sm_recv(ap_dev);
		switch (status.response_code) {
		case AP_RESPONSE_NORMAL:
		if (ap_dev->queue_count > 0)
		if (ap_dev->queue_count > 0) {
		ap_dev->state = AP_STATE_WORKING;
		return AP_WAIT_AGAIN;
		}
		ap_dev->state = AP_STATE_IDLE;
		return AP_WAIT_NONE;
		case AP_RESPONSE_NO_PENDING_REPLY: