tag	line	file	source code
RS_EVENT_HUP_PGRP	324	kernel/chr_drv/serial.c	rs_sched_event(info, RS_EVENT_HUP_PGRP);
RS_EVENT_HUP_PGRP	379	kernel/chr_drv/serial.c	if (!clear_bit(RS_EVENT_HUP_PGRP, &info->event))