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>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 83ca58b9f4c1..f07b1450b3c2 100644
--- 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);