diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index fdd1095..a09538e 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -136,6 +136,7 @@
 	atomic_t references;
 	char *ids;		/* Supported Hardware IDs */
 	struct acpi_device_ops ops;
+	struct device_driver drv;
 };
 
 /*
@@ -301,6 +302,8 @@
 };
 
 #define acpi_driver_data(d)	((d)->driver_data)
+#define to_acpi_device(d)	container_of(d, struct acpi_device, dev)
+#define to_acpi_driver(d)	container_of(d, struct acpi_driver, drv)
 
 /*
  * Events