tag	line	file	source code
DT_RXBUSY	982	drivers/char/istallion.c	nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK);
DT_RXBUSY	2474	drivers/char/istallion.c	if (nt.data & DT_RXBUSY) {