tag	line	file	source code
UART_MSR	324	kernel/chr_drv/serial.c	status = serial_in(info, UART_MSR);
UART_MSR	650	kernel/chr_drv/serial.c	(void)serial_inp(info, UART_MSR);
UART_MSR	689	kernel/chr_drv/serial.c	(void)serial_inp(info, UART_MSR);
UART_MSR	879	kernel/chr_drv/serial.c	status = serial_in(info, UART_MSR);
UART_MSR	1079	kernel/chr_drv/serial.c	(void)serial_inp(info, UART_MSR);
UART_MSR	1109	kernel/chr_drv/serial.c	scratch2 = serial_inp(info, UART_MSR);
UART_MSR	1111	kernel/chr_drv/serial.c	status1 = serial_inp(info, UART_MSR) & 0xF0;
UART_MSR	1113	kernel/chr_drv/serial.c	serial_outp(info, UART_MSR, scratch2);