[POWERPC] Clean up vio.h

Remove vio_dma_ops declaration (since it no longer exists) and some
unused fields from struct vio_driver.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/kernel/vio.c

@@ -168,16 +168,6 @@ static int vio_bus_remove(struct device *dev)
 	return 1;
 }
 
-/* convert from struct device to struct vio_dev and pass to driver. */
-static void vio_bus_shutdown(struct device *dev)
-{
-	struct vio_dev *viodev = to_vio_dev(dev);
-	struct vio_driver *viodrv = to_vio_driver(dev->driver);
-
-	if (dev->driver && viodrv->shutdown)
-		viodrv->shutdown(viodev);
-}
-
 /**
  * vio_register_driver: - Register a new vio driver
  * @drv:	The vio_driver structure to be registered.
@@ -397,7 +387,6 @@ static struct bus_type vio_bus_type = {
 	.match = vio_bus_match,
 	.probe = vio_bus_probe,
 	.remove = vio_bus_remove,
-	.shutdown = vio_bus_shutdown,
 };
 
 /**

include/asm-powerpc/vio.h

@@ -53,17 +53,12 @@ struct vio_dev {
 };
 
 struct vio_driver {
-	struct list_head node;
 	const struct vio_device_id *id_table;
 	int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
 	int (*remove)(struct vio_dev *dev);
-	void (*shutdown)(struct vio_dev *dev);
-	unsigned long driver_data;
 	struct device_driver driver;
 };
 
-extern struct dma_mapping_ops vio_dma_ops;
-
 extern int vio_register_driver(struct vio_driver *drv);
 extern void vio_unregister_driver(struct vio_driver *drv);