if ((drv->bus->probe && drv->probe) ||
            (drv->bus->remove && drv->remove) ||
            (drv->bus->shutdown && drv->shutdown))
-               printk(KERN_WARNING "Driver '%s' needs updating - please use "
+               pr_warn("Driver '%s' needs updating - please use "
                        "bus_type methods\n", drv->name);
 
        other = driver_find(drv->name, drv->bus);
        if (other) {
-               printk(KERN_ERR "Error: Driver '%s' is already registered, "
+               pr_err("Error: Driver '%s' is already registered, "
                        "aborting...\n", drv->name);
                return -EBUSY;
        }