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authorRalph Wuerthner <rwuerthn@de.ibm.com>2007-03-26 20:42:43 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2007-03-26 20:43:47 +0200
commite675c0d2bf523a80098c843603ccc091d3720fb4 (patch)
tree058e1373752e83d0b635676746afa11ddbc18544 /drivers/s390/crypto
parentc6a48264739e3486f66e5b21a543c9573b713621 (diff)
downloadlinux-next-e675c0d2bf523a80098c843603ccc091d3720fb4.tar.gz
[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>
Diffstat (limited to 'drivers/s390/crypto')
-rw-r--r--drivers/s390/crypto/ap_bus.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index a817dade37c0..bf37cdf43fae 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -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;