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authorIngo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>2015-11-27 10:33:27 +0300
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-11-27 11:23:29 +0300
commit2bc53b8046ce9a1543204b6c6da1ab95e4caac76 (patch)
tree88a7e1d773fd04399c071087c6fb39912c42a70d /drivers/s390
parent78c4a49a69e910a162b05e4e8727b9bdbf948f13 (diff)
downloadlinux-2bc53b8046ce9a1543204b6c6da1ab95e4caac76.tar.xz
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>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/crypto/ap_bus.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 61f768518a34..24ec282e15d8 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -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: