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-rw-r--r--include/linux/usb.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index bcbfa72423c3..9f465bfd8179 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -277,7 +277,9 @@ extern void usb_driver_release_interface(struct usb_driver *driver,
const struct usb_device_id *usb_match_id(struct usb_interface *interface,
const struct usb_device_id *id);
-struct usb_interface *usb_find_interface(struct usb_driver *drv, kdev_t kdev);
+extern struct usb_interface *usb_find_interface(struct usb_driver *drv, kdev_t kdev);
+extern struct usb_interface *usb_ifnum_to_if(struct usb_device *dev, unsigned ifnum);
+
/**
* usb_make_path - returns stable device path in the usb tree