dv_ref            468 kern/subr_autoconf.c 	dev->dv_ref = 1;
dv_ref            829 kern/subr_autoconf.c 	dv->dv_ref++;
dv_ref            842 kern/subr_autoconf.c 	dv->dv_ref--;
dv_ref            843 kern/subr_autoconf.c 	if (dv->dv_ref == 0) {
dv_ref             80 sys/device.h   	int	dv_ref;			/* ref count */