USB: convert usb class devices to real devices

Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/core/file.c

@@ -194,14 +194,13 @@ int usb_register_dev(struct usb_interface *intf,
 		++temp;
 	else
 		temp = name;
-	intf->class_dev = class_device_create(usb_class->class, NULL,
-					      MKDEV(USB_MAJOR, minor),
-					      &intf->dev, "%s", temp);
-	if (IS_ERR(intf->class_dev)) {
+	intf->usb_dev = device_create(usb_class->class, &intf->dev,
+				      MKDEV(USB_MAJOR, minor), "%s", temp);
+	if (IS_ERR(intf->usb_dev)) {
 		spin_lock (&minor_lock);
 		usb_minors[intf->minor] = NULL;
 		spin_unlock (&minor_lock);
-		retval = PTR_ERR(intf->class_dev);
+		retval = PTR_ERR(intf->usb_dev);
 	}
 exit:
 	return retval;
@@ -242,8 +241,8 @@ void usb_deregister_dev(struct usb_interface *intf,
 	spin_unlock (&minor_lock);
 
 	snprintf(name, BUS_ID_SIZE, class_driver->name, intf->minor - minor_base);
-	class_device_destroy(usb_class->class, MKDEV(USB_MAJOR, intf->minor));
-	intf->class_dev = NULL;
+	device_destroy(usb_class->class, MKDEV(USB_MAJOR, intf->minor));
+	intf->usb_dev = NULL;
 	intf->minor = -1;
 	destroy_usb_class();
 }

include/linux/usb.h

@@ -107,7 +107,8 @@ enum usb_interface_condition {
  * @needs_remote_wakeup: flag set when the driver requires remote-wakeup
  *	capability during autosuspend.
  * @dev: driver model's view of this device
- * @class_dev: driver model's class view of this device.
+ * @usb_dev: if an interface is bound to the USB major, this will point
+ *	to the sysfs representation for that device.
  * @pm_usage_cnt: PM usage counter for this interface; autosuspend is not
  *	allowed unless the counter is 0.
  *
@@ -152,7 +153,7 @@ struct usb_interface {
 	unsigned needs_remote_wakeup:1;	/* driver requires remote wakeup */
 
 	struct device dev;		/* interface specific device info */
-	struct class_device *class_dev;
+	struct device *usb_dev;		/* pointer to the usb class's device, if any */
 	int pm_usage_cnt;		/* usage counter for autosuspend */
 };
 #define	to_usb_interface(d) container_of(d, struct usb_interface, dev)