register_lte_tty_device  536 drivers/staging/gdm724x/gdm_mux.c 	ret = register_lte_tty_device(tty_dev, &intf->dev);
register_lte_tty_device   56 drivers/staging/gdm724x/gdm_tty.h int register_lte_tty_device(struct tty_dev *tty_dev, struct device *dev);