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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.c38
1 files changed, 24 insertions, 14 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 9be4596d8a08..ea099910b4e9 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -668,10 +668,28 @@ static int ap_device_probe(struct device *dev)
struct ap_driver *ap_drv = to_ap_drv(dev->driver);
int rc;
+ /* Add queue/card to list of active queues/cards */
+ spin_lock_bh(&ap_list_lock);
+ if (is_card_dev(dev))
+ list_add(&to_ap_card(dev)->list, &ap_card_list);
+ else
+ list_add(&to_ap_queue(dev)->list,
+ &to_ap_queue(dev)->card->queues);
+ spin_unlock_bh(&ap_list_lock);
+
ap_dev->drv = ap_drv;
rc = ap_drv->probe ? ap_drv->probe(ap_dev) : -ENODEV;
- if (rc)
+
+ if (rc) {
+ spin_lock_bh(&ap_list_lock);
+ if (is_card_dev(dev))
+ list_del_init(&to_ap_card(dev)->list);
+ else
+ list_del_init(&to_ap_queue(dev)->list);
+ spin_unlock_bh(&ap_list_lock);
ap_dev->drv = NULL;
+ }
+
return rc;
}
@@ -680,14 +698,17 @@ static int ap_device_remove(struct device *dev)
struct ap_device *ap_dev = to_ap_dev(dev);
struct ap_driver *ap_drv = ap_dev->drv;
+ if (ap_drv->remove)
+ ap_drv->remove(ap_dev);
+
+ /* Remove queue/card from list of active queues/cards */
spin_lock_bh(&ap_list_lock);
if (is_card_dev(dev))
list_del_init(&to_ap_card(dev)->list);
else
list_del_init(&to_ap_queue(dev)->list);
spin_unlock_bh(&ap_list_lock);
- if (ap_drv->remove)
- ap_drv->remove(ap_dev);
+
return 0;
}
@@ -1056,10 +1077,6 @@ static void ap_scan_bus(struct work_struct *unused)
}
/* get it and thus adjust reference counter */
get_device(&ac->ap_dev.device);
- /* Add card device to card list */
- spin_lock_bh(&ap_list_lock);
- list_add(&ac->list, &ap_card_list);
- spin_unlock_bh(&ap_list_lock);
}
/* now create the new queue device */
aq = ap_queue_create(qid, type);
@@ -1070,10 +1087,6 @@ static void ap_scan_bus(struct work_struct *unused)
aq->ap_dev.device.parent = &ac->ap_dev.device;
dev_set_name(&aq->ap_dev.device,
"%02x.%04x", id, dom);
- /* Add queue device to card queue list */
- spin_lock_bh(&ap_list_lock);
- list_add(&aq->list, &ac->queues);
- spin_unlock_bh(&ap_list_lock);
/* Start with a device reset */
spin_lock_bh(&aq->lock);
ap_wait(ap_sm_event(aq, AP_EVENT_POLL));
@@ -1081,9 +1094,6 @@ static void ap_scan_bus(struct work_struct *unused)
/* Register device */
rc = device_register(&aq->ap_dev.device);
if (rc) {
- spin_lock_bh(&ap_list_lock);
- list_del_init(&aq->list);
- spin_unlock_bh(&ap_list_lock);
put_device(&aq->ap_dev.device);
continue;
}