227 static u16 y_old[MAX_CONTACTS + 1] = { 0 };  variable
747 		y_old[id] = y;  in filter_point()
751 	y_err = y > y_old[id] ? (y - y_old[id]) : (y_old[id] - y);  in filter_point()
781 	    y_old[id] ? (y_old[id] + filter_step_y) : (y_old[id] -  in filter_point()
785 	y_old[id] = y_new;  in filter_point()
797 		y_old[id] = y;  in record_point()
801 	y = (y_old[id] + y) / 2;  in record_point()
809 	if (y > y_old[id]) {  in record_point()
810 		y_err = y - y_old[id];  in record_point()
812 		y_err = y_old[id] - y;  in record_point()
819 		y_old[id] = y;  in record_point()
830 			y_old[id] = y;  in record_point()
832 			y_new = y_old[id];  in record_point()
838 		y_new = y_old[id];  in record_point()