tag	line	file	source code
ICRNL	1804	drivers/char/tty_io.c	tty_std_termios.c_iflag = ICRNL | IXON;
ICRNL	253	drivers/char/tty_ioctl.c	termios->c_iflag = ICRNL | IXON;
ICRNL	136	include/linux/tty.h	#define I_ICRNL(tty)  _I_FLAG((tty),ICRNL)