From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Use workqueue to process HCI callbacks.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 2 ++
net/bluetooth/hci_core.c | 41 ++++++++++++++++++++++++++++++++++++++
2 files changed, 43 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 276092e..2fa5c3d 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1110,5 +1110,7 @@ int hci_cmd_cb(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param,
void (*cb)(struct hci_dev *hdev, struct hci_cb_cmd *cmd), void *opt,
void (*destructor)(struct hci_cb_cmd *cmd), gfp_t flags);
void hci_remove_cb(struct hci_dev *hdev, struct hci_cb_cmd *cmd);
+void hci_queue_cb(struct hci_dev *hdev, struct hci_cb_cmd *cmd,
+ struct workqueue_struct *workqueue);
#endif /* __HCI_CORE_H */
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 9deee5f..82431f5 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2309,6 +2309,47 @@ struct hci_cb_cmd *hci_find_cb(struct hci_dev *hdev, __u16 opcode)
return NULL;
}
+struct hci_cb_work {
+ struct work_struct work;
+ struct hci_dev *hdev;
+ struct hci_cb_cmd *cmd;
+};
+
+static void hci_cb_worker(struct work_struct *w)
+{
+ struct hci_cb_work *work = (struct hci_cb_work *) w;
+ struct hci_cb_cmd *cmd = work->cmd;
+ struct hci_dev *hdev = work->hdev;
+
+ cmd->cb(hdev, cmd);
+
+ hci_remove_cb(hdev, cmd);
+ kfree(w);
+ hci_dev_put(hdev);
+}
+
+void hci_queue_cb(struct hci_dev *hdev, struct hci_cb_cmd *cmd,
+ struct workqueue_struct *workqueue)
+{
+ struct hci_cb_work *work;
+
+ BT_DBG("Queue cmd %p opt %p", cmd, cmd->opt);
+
+ work = kmalloc(sizeof(*work), GFP_KERNEL);
+ if (!work)
+ return;
+
+ INIT_WORK(&work->work, hci_cb_worker);
+ work->hdev = hdev;
+ work->cmd = cmd;
+ hci_dev_hold(hdev);
+
+ if (!queue_work(workqueue, &work->work)) {
+ kfree(work);
+ hci_dev_put(hdev);
+ }
+}
+
void hci_remove_cb(struct hci_dev *hdev, struct hci_cb_cmd *cmd)
{
mutex_lock(&hdev->cb_list_lock);
--
1.7.9.5
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