tag	line	file	source code
UART_IIR	218	kernel/chr_drv/serial.c	if (serial_inp(info, UART_IIR) & UART_IIR_NO_INT)
UART_IIR	566	kernel/chr_drv/serial.c	(void)serial_inp(info, UART_IIR);
UART_IIR	605	kernel/chr_drv/serial.c	(void)serial_inp(info, UART_IIR);
UART_IIR	1117	kernel/chr_drv/serial.c	(void)serial_inp(info, UART_IIR);
UART_IIR	1188	kernel/chr_drv/serial.c	scratch = inb(UART_IIR + port) >> 6;