diff --git a/drivers/dio/dio-driver.c b/drivers/dio/dio-driver.c
index 2d9fa6011945..12fa2d209dab 100644
--- a/drivers/dio/dio-driver.c
+++ b/drivers/dio/dio-driver.c
@@ -110,10 +110,10 @@ void dio_unregister_driver(struct dio_driver *drv)
  *  and 0 if there is no match.
  */
 
-static int dio_bus_match(struct device *dev, struct device_driver *drv)
+static int dio_bus_match(struct device *dev, const struct device_driver *drv)
 {
 	struct dio_dev *d = to_dio_dev(dev);
-	struct dio_driver *dio_drv = to_dio_driver(drv);
+	const struct dio_driver *dio_drv = to_dio_driver(drv);
 	const struct dio_device_id *ids = dio_drv->id_table;
 
 	if (!ids)
diff --git a/include/linux/dio.h b/include/linux/dio.h
index 2b5923909f96..464331c4c4a7 100644
--- a/include/linux/dio.h
+++ b/include/linux/dio.h
@@ -93,7 +93,7 @@ struct dio_driver {
 	struct device_driver driver;
 };
 
-#define to_dio_driver(drv)    container_of(drv, struct dio_driver, driver)
+#define to_dio_driver(drv)    container_of_const(drv, struct dio_driver, driver)
 
 /* DIO/DIO-II boards all have the following 8bit registers.
  * These are offsets from the base of the device.