extcon_register_notifier
ret = extcon_register_notifier(edev, id, nb);
EXPORT_SYMBOL_GPL(extcon_register_notifier);
ret = extcon_register_notifier(edev, EXTCON_DISP_MHL, &ctx->extcon_nb);
ret = extcon_register_notifier(uphy->vbus_edev, EXTCON_USB,
ret = extcon_register_notifier(dwc->edev, EXTCON_USB_HOST,
ret = extcon_register_notifier(udc->edev, EXTCON_USB,
int extcon_register_notifier(struct extcon_dev *edev, unsigned int id,