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path: root/drivers/connector/connector.c
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Diffstat (limited to 'drivers/connector/connector.c')
-rw-r--r--drivers/connector/connector.c47
1 files changed, 12 insertions, 35 deletions
diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index f7554de3be5..d77005849af 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -122,51 +122,28 @@ EXPORT_SYMBOL_GPL(cn_netlink_send);
*/
static int cn_call_callback(struct sk_buff *skb)
{
- struct cn_callback_entry *__cbq, *__new_cbq;
+ struct cn_callback_entry *i, *cbq = NULL;
struct cn_dev *dev = &cdev;
struct cn_msg *msg = NLMSG_DATA(nlmsg_hdr(skb));
+ struct netlink_skb_parms *nsp = &NETLINK_CB(skb);
int err = -ENODEV;
spin_lock_bh(&dev->cbdev->queue_lock);
- list_for_each_entry(__cbq, &dev->cbdev->queue_list, callback_entry) {
- if (cn_cb_equal(&__cbq->id.id, &msg->id)) {
- if (likely(!work_pending(&__cbq->work) &&
- __cbq->data.skb == NULL)) {
- __cbq->data.skb = skb;
-
- if (queue_work(dev->cbdev->cn_queue,
- &__cbq->work))
- err = 0;
- else
- err = -EINVAL;
- } else {
- struct cn_callback_data *d;
-
- err = -ENOMEM;
- __new_cbq = kzalloc(sizeof(struct cn_callback_entry), GFP_ATOMIC);
- if (__new_cbq) {
- d = &__new_cbq->data;
- d->skb = skb;
- d->callback = __cbq->data.callback;
- d->free = __new_cbq;
-
- INIT_WORK(&__new_cbq->work,
- &cn_queue_wrapper);
-
- if (queue_work(dev->cbdev->cn_queue,
- &__new_cbq->work))
- err = 0;
- else {
- kfree(__new_cbq);
- err = -EINVAL;
- }
- }
- }
+ list_for_each_entry(i, &dev->cbdev->queue_list, callback_entry) {
+ if (cn_cb_equal(&i->id.id, &msg->id)) {
+ atomic_inc(&i->refcnt);
+ cbq = i;
break;
}
}
spin_unlock_bh(&dev->cbdev->queue_lock);
+ if (cbq != NULL) {
+ cbq->callback(msg, nsp);
+ kfree_skb(skb);
+ cn_queue_release_callback(cbq);
+ }
+
return err;
}