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[S390] zcrypt: Fix ap_poll_requests counter in lost requests error path. 

In the unlikely event that an AP device lost requests, don't forget to
update the ap_poll_requests counter too. Same must happen in case an AP
device is removed while there are still outstanding requests.

Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Ralph Wuerthner 2007-03-26 20:42:43 +02:00 committed by Heiko Carstens
parent c6a4826473
commit e675c0d2bf
1 changed files with 4 additions and 0 deletions
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4
drivers/s390/crypto/ap_bus.c
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@ -505,6 +505,9 @@ static int ap_device_remove(struct device *dev)
spin_lock_bh(&ap_device_lock);
list_del_init(&ap_dev->list);
spin_unlock_bh(&ap_device_lock);
spin_lock_bh(&ap_dev->lock);
atomic_sub(ap_dev->queue_count, &ap_poll_requests);
spin_unlock_bh(&ap_dev->lock);
return 0;
}
@ -867,6 +870,7 @@ static int ap_poll_read(struct ap_device *ap_dev, unsigned long *flags)
case AP_RESPONSE_NO_PENDING_REPLY:
if (status.queue_empty) {
/* The card shouldn't forget requests but who knows. */
atomic_sub(ap_dev->queue_count, &ap_poll_requests);
ap_dev->queue_count = 0;
list_splice_init(&ap_dev->pendingq, &ap_dev->requestq);
ap_dev->requestq_count += ap_dev->pendingq_count;