<para>Gadget drivers
rely on common USB structures and constants
defined in the
-<filename><linux/usb_ch9.h></filename>
+<filename><linux/usb/ch9.h></filename>
header file, which is standard in Linux 2.6 kernels.
These are the same types and constants used by host
side drivers (and usbcore).
</para>
-!Iinclude/linux/usb_ch9.h
+!Iinclude/linux/usb/ch9.h
</sect1>
<sect1 id="core"><title>Core Objects and Methods</title>