usb_gadget_set_selfpowered - sets the device selfpowered feature.
int usb_gadget_set_selfpowered (struct usb_gadget * gadget);
gadget the device being declared as self-powered
this affects the device status reported by the hardware driver to reflect that it now has a local power supply. returns zero on success, else negative errno.
David Brownell <firstname.lastname@example.org>.