Bluetooth: hci_event: Set DISCOVERY_FINDING on SCAN_ENABLED

This makes sure that discovery state is properly synchronized otherwise
reports may not generate MGMT DeviceFound events as it would be assumed
that it was not initiated by a discovery session.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

net/bluetooth/hci_core.c

@@ -149,8 +149,6 @@ void hci_discovery_set_state(struct hci_dev *hdev, int state)
 {
 	int old_state = hdev->discovery.state;
 
-	BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state);
-
 	if (old_state == state)
 		return;
 
@@ -166,6 +164,13 @@ void hci_discovery_set_state(struct hci_dev *hdev, int state)
 	case DISCOVERY_STARTING:
 		break;
 	case DISCOVERY_FINDING:
+		/* If discovery was not started then it was initiated by the
+		 * MGMT interface so no MGMT event shall be generated either
+		 */
+		if (old_state != DISCOVERY_STARTING) {
+			hdev->discovery.state = old_state;
+			return;
+		}
 		mgmt_discovering(hdev, 1);
 		break;
 	case DISCOVERY_RESOLVING:
@@ -173,6 +178,8 @@ void hci_discovery_set_state(struct hci_dev *hdev, int state)
 	case DISCOVERY_STOPPING:
 		break;
 	}
+
+	bt_dev_dbg(hdev, "state %u -> %u", old_state, state);
 }
 
 void hci_inquiry_cache_flush(struct hci_dev *hdev)

net/bluetooth/hci_event.c

@@ -1779,7 +1779,6 @@ static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable)
 		hci_dev_set_flag(hdev, HCI_LE_SCAN);
 		if (hdev->le_scan_type == LE_SCAN_ACTIVE)
 			clear_pending_adv_report(hdev);
-		if (hci_dev_test_flag(hdev, HCI_MESH))
 		hci_discovery_set_state(hdev, DISCOVERY_FINDING);
 		break;