tag	line	file	source code
PT_EXTCLKB	454	drivers/net/pt.c	outb_p( (pt_sercfg &= ~PT_EXTCLKB), (lp->cardbase + SERIAL_CFG) );
PT_EXTCLKB	462	drivers/net/pt.c	outb_p( (pt_sercfg |= PT_EXTCLKB), (lp->cardbase + SERIAL_CFG) );