spin_lock_irqsave(&intf->waiting_msgs_lock, flags);
        if (!list_empty(&intf->waiting_msgs)) {
                list_add_tail(&msg->link, &intf->waiting_msgs);
-               spin_unlock(&intf->waiting_msgs_lock);
+               spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
                goto out;
        }
        spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
        if (rv > 0) {
                /* Could not handle the message now, just add it to a
                    list to handle later. */
-               spin_lock(&intf->waiting_msgs_lock);
+               spin_lock_irqsave(&intf->waiting_msgs_lock, flags);
                list_add_tail(&msg->link, &intf->waiting_msgs);
-               spin_unlock(&intf->waiting_msgs_lock);
+               spin_unlock_irqrestore(&intf->waiting_msgs_lock, flags);
        } else if (rv == 0) {
                ipmi_free_smi_msg(msg);
        }