Bluetooth: Don't clear HCI_DISCOVERABLE when powering off

Once mgmt_set_powered(off) is updated to clear the scan mode we should
not just blindly clear the HCI_DISCOVERABLE flag in mgmt_discoverable()
but first check if there is a pending set_powered operation.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/mgmt.c

@@ -4790,6 +4790,10 @@ void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable)
 	if (mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev))
 		return;
 
+	/* Powering off may clear the scan mode - don't let that interfere */
+	if (!discoverable && mgmt_pending_find(MGMT_OP_SET_POWERED, hdev))
+		return;
+
 	if (discoverable) {
 		changed = !test_and_set_bit(HCI_DISCOVERABLE, &hdev->dev_flags);
 	} else {