*
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
 
                status = AE_OK;
        } else {
-               printk(KERN_WARNING "atlas: shrugged on unexpected function"
-                       ":function=%x,address=%lx,value=%x\n",
+               pr_warn("shrugged on unexpected function: function=%x,address=%lx,value=%x\n",
                        function, (unsigned long)address, (u32)*value);
                status = AE_BAD_PARAMETER;
        }
 
        input_dev = input_allocate_device();
        if (!input_dev) {
-               printk(KERN_ERR "atlas: unable to allocate input device\n");
+               pr_err("unable to allocate input device\n");
                return -ENOMEM;
        }
 
 
        err = input_register_device(input_dev);
        if (err) {
-               printk(KERN_ERR "atlas: couldn't register input device\n");
+               pr_err("couldn't register input device\n");
                input_free_device(input_dev);
                return err;
        }
                                0x81, &acpi_atlas_button_handler,
                                &acpi_atlas_button_setup, device);
        if (ACPI_FAILURE(status)) {
-               printk(KERN_ERR "Atlas: Error installing addr spc handler\n");
+               pr_err("error installing addr spc handler\n");
                input_unregister_device(input_dev);
                err = -EINVAL;
        }
        status = acpi_remove_address_space_handler(device->handle,
                                0x81, &acpi_atlas_button_handler);
        if (ACPI_FAILURE(status))
-               printk(KERN_ERR "Atlas: Error removing addr spc handler\n");
+               pr_err("error removing addr spc handler\n");
 
        input_unregister_device(input_dev);
 
 
 static int __init atlas_acpi_init(void)
 {
-       int result;
-
        if (acpi_disabled)
                return -ENODEV;
 
-       result = acpi_bus_register_driver(&atlas_acpi_driver);
-       if (result < 0) {
-               printk(KERN_ERR "Atlas ACPI: Unable to register driver\n");
-               return -ENODEV;
-       }
-
-       return 0;
+       return acpi_bus_register_driver(&atlas_acpi_driver);
 }
 
 static void __exit atlas_acpi_exit(void)