Bluetooth: Update stop_discovery to use HCI request

This patch modifies the stop_discovery function so it uses the HCI
request framework.

The HCI request is built according to the current discovery state
(inquiry, LE scanning or name resolving) and a complete callback is
register to handle the command complete event for the stop discovery
command. This way, we move all stop_discovery mgmt handling code
spread in hci_event.c to a single place in mgmt.c.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 743100f..c33bc4f 100644 (file)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2808,6 +2808,23 @@ failed:
        return err;
 }
 
+static void stop_discovery_complete(struct hci_dev *hdev, u8 status)
+{
+       BT_DBG("status %d", status);
+
+       hci_dev_lock(hdev);
+
+       if (status) {
+               mgmt_stop_discovery_failed(hdev, status);
+               goto unlock;
+       }
+
+       hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
+
+unlock:
+       hci_dev_unlock(hdev);
+}
+
 static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
                          u16 len)
 {
@@ -2815,6 +2832,8 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
        struct pending_cmd *cmd;
        struct hci_cp_remote_name_req_cancel cp;
        struct inquiry_entry *e;
+       struct hci_request req;
+       struct hci_cp_le_set_scan_enable enable_cp;
        int err;
 
        BT_DBG("%s", hdev->name);
@@ -2841,12 +2860,20 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
                goto unlock;
        }
 
+       hci_req_init(&req, hdev);
+
        switch (hdev->discovery.state) {
        case DISCOVERY_FINDING:
-               if (test_bit(HCI_INQUIRY, &hdev->flags))
-                       err = hci_cancel_inquiry(hdev);
-               else
-                       err = hci_cancel_le_scan(hdev);
+               if (test_bit(HCI_INQUIRY, &hdev->flags)) {
+                       hci_req_add(&req, HCI_OP_INQUIRY_CANCEL, 0, NULL);
+               } else {
+                       cancel_delayed_work(&hdev->le_scan_disable);
+
+                       memset(&enable_cp, 0, sizeof(enable_cp));
+                       enable_cp.enable = LE_SCAN_DISABLE;
+                       hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE,
+                                   sizeof(enable_cp), &enable_cp);
+               }
 
                break;
 
@@ -2864,16 +2891,22 @@ static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data,
                }
 
                bacpy(&cp.bdaddr, &e->data.bdaddr);
-               err = hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ_CANCEL,
-                                  sizeof(cp), &cp);
+               hci_req_add(&req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp),
+                           &cp);
 
                break;
 
        default:
                BT_DBG("unknown discovery state %u", hdev->discovery.state);
-               err = -EFAULT;
+
+               mgmt_pending_remove(cmd);
+               err = cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY,
+                                  MGMT_STATUS_FAILED, &mgmt_cp->type,
+                                  sizeof(mgmt_cp->type));
+               goto unlock;
        }
 
+       err = hci_req_run(&req, stop_discovery_complete);
        if (err < 0)
                mgmt_pending_remove(cmd);
        else