serial_dl_read    822 drivers/tty/serial/8250/8250_port.c 	old_dl = serial_dl_read(up);
serial_dl_read    852 drivers/tty/serial/8250/8250_port.c 	old_dl = serial_dl_read(p);
serial_dl_read    854 drivers/tty/serial/8250/8250_port.c 	id = serial_dl_read(p);
serial_dl_read   1068 drivers/tty/serial/8250/8250_port.c 			quot = serial_dl_read(up);