1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 6af3581e1114..e101a2d04d75 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -619,6 +619,10 @@ extern struct usb_interface *usb_ifnum_to_if(const struct usb_device *dev,
                 unsigned ifnum);
 extern struct usb_host_interface *usb_altnum_to_altsetting(
                 const struct usb_interface *intf, unsigned int altnum);
+extern struct usb_host_interface *usb_find_alt_setting(
+                struct usb_host_config *config,
+                unsigned int iface_num,
+                unsigned int alt_num);
 
 
 /**