serial8250_init_port  513 drivers/tty/serial/8250/8250_core.c 		serial8250_init_port(up);
serial8250_init_port 3079 drivers/tty/serial/8250/8250_port.c EXPORT_SYMBOL_GPL(serial8250_init_port);
serial8250_init_port  173 include/linux/serial_8250.h void serial8250_init_port(struct uart_8250_port *up);