Hi > > + > +static struct otg_hcd_ops otg_hcd_intf = { > + .add = usb_add_hcd, > + .remove = usb_remove_hcd, > + .usb_bus_start_enum = usb_bus_start_enum, Build break if CONFIG_USB_OTG is not enabled: drivers/built-in.o:(.data+0x1db30): undefined reference to `usb_bus_start_enum' Makefile:948: recipe for target 'vmlinux' failed make: *** [vmlinux] Error 1 Li Jun > + .usb_control_msg = usb_control_msg, > + .usb_hub_find_child = usb_hub_find_child, }; > + -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html