do_afc            826 dev/pci/bktr/bktr_tuner.c 			if ( (N = do_afc( bktr, addr, N )) < 0 ) {
do_afc             94 dev/pci/bktr/bktr_tuner.h int	do_afc( bktr_ptr_t bktr, int addr, int frequency );