Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth...

[cascardo/linux.git] / net / bluetooth / hci_core.c

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index e3a3499..cc27297 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -513,7 +513,10 @@ static void hci_init2_req(struct hci_request *req, unsigned long opt)
 
        hci_setup_event_mask(req);
 
-       if (hdev->hci_ver > BLUETOOTH_VER_1_1)
+       /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read
+        * local supported commands HCI command.
+        */
+       if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1)
                hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL);
 
        if (lmp_ssp_capable(hdev)) {
@@ -2165,10 +2168,6 @@ int hci_register_dev(struct hci_dev *hdev)
 
        BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus);
 
-       write_lock(&hci_dev_list_lock);
-       list_add(&hdev->list, &hci_dev_list);
-       write_unlock(&hci_dev_list_lock);
-
        hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND |
                                          WQ_MEM_RECLAIM, 1, hdev->name);
        if (!hdev->workqueue) {
@@ -2203,6 +2202,10 @@ int hci_register_dev(struct hci_dev *hdev)
        if (hdev->dev_type != HCI_AMP)
                set_bit(HCI_AUTO_OFF, &hdev->dev_flags);
 
+       write_lock(&hci_dev_list_lock);
+       list_add(&hdev->list, &hci_dev_list);
+       write_unlock(&hci_dev_list_lock);
+
        hci_notify(hdev, HCI_DEV_REG);
        hci_dev_hold(hdev);
 
@@ -2215,9 +2218,6 @@ err_wqueue:
        destroy_workqueue(hdev->req_workqueue);
 err:
        ida_simple_remove(&hci_index_ida, hdev->id);
-       write_lock(&hci_dev_list_lock);
-       list_del(&hdev->list);
-       write_unlock(&hci_dev_list_lock);
 
        return error;
 }
@@ -3399,8 +3399,16 @@ void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status)
         */
        if (hdev->sent_cmd) {
                req_complete = bt_cb(hdev->sent_cmd)->req.complete;
-               if (req_complete)
+
+               if (req_complete) {
+                       /* We must set the complete callback to NULL to
+                        * avoid calling the callback more than once if
+                        * this function gets called again.
+                        */
+                       bt_cb(hdev->sent_cmd)->req.complete = NULL;
+
                        goto call_complete;
+               }
        }
 
        /* Remove all pending commands belonging to this request */