Bluetooth: Add helper function for clearing the discovery filter

The discovery filter allocates memory for its UUID list. So use
a helper function to free it and reset it to default states.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 83ca58b..f07b145 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -509,6 +509,14 @@ static inline void discovery_init(struct hci_dev *hdev)
        hdev->discovery.rssi = HCI_RSSI_INVALID;
 }
 
+static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
+{
+       hdev->discovery.rssi = HCI_RSSI_INVALID;
+       hdev->discovery.uuid_count = 0;
+       kfree(hdev->discovery.uuids);
+       hdev->discovery.uuids = NULL;
+}
+
 bool hci_discovery_active(struct hci_dev *hdev);
 
 void hci_discovery_set_state(struct hci_dev *hdev, int state);

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 42f86dc..3c81b5c 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -2061,10 +2061,7 @@ void hci_discovery_set_state(struct hci_dev *hdev, int state)
                 * count, it is important to actually free the allocated
                 * list of UUIDs here.
                 */
-               hdev->discovery.rssi = HCI_RSSI_INVALID;
-               hdev->discovery.uuid_count = 0;
-               kfree(hdev->discovery.uuids);
-               hdev->discovery.uuids = NULL;
+               hci_discovery_filter_clear(hdev);
 
                if (old_state != DISCOVERY_STARTING)
                        mgmt_discovering(hdev, 0);