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);