Bluetooth: Don't clear HCI_ADVERTISING when powering off

Once mgmt_set_powered(off) is updated to clear the scan mode we should
not just blindly clear the HCI_ADVERTISING flag in mgmt_advertising()
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

@@ -4842,6 +4842,10 @@ void mgmt_connectable(struct hci_dev *hdev, u8 connectable)
 
 void mgmt_advertising(struct hci_dev *hdev, u8 advertising)
 {
+	/* Powering off may stop advertising - don't let that interfere */
+	if (!advertising && mgmt_pending_find(MGMT_OP_SET_POWERED, hdev))
+		return;
+
 	if (advertising)
 		set_bit(HCI_ADVERTISING, &hdev->dev_flags);
 	else