diff --git a/sys/dev/dkwedge/dk.c b/sys/dev/dkwedge/dk.c
index 655329f93c3e..3c7312b74c98 100644
--- a/sys/dev/dkwedge/dk.c
+++ b/sys/dev/dkwedge/dk.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: dk.c,v 1.88 2016/01/15 07:48:22 mlelstv Exp $	*/
+/*	$NetBSD: dk.c,v 1.89 2016/04/27 02:19:12 christos Exp $	*/
 
 /*-
  * Copyright (c) 2004, 2005, 2006, 2007 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.88 2016/01/15 07:48:22 mlelstv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.89 2016/04/27 02:19:12 christos Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_dkwedge.h"
@@ -761,6 +761,23 @@ dkwedge_find_by_wname(const char *wname)
 	return dv;
 }
 
+device_t
+dkwedge_find_by_parent(const char *name, size_t *i)
+{
+	rw_enter(&dkwedges_lock, RW_WRITER);
+	for (; *i < (size_t)ndkwedges; (*i)++) {
+		struct dkwedge_softc *sc;
+		if ((sc = dkwedges[*i]) == NULL)
+			continue;
+		if (strcmp(sc->sc_parent->dk_name, name) != 0)
+			continue;
+		rw_exit(&dkwedges_lock);
+		return sc->sc_dev;
+	}
+	rw_exit(&dkwedges_lock);
+	return NULL;
+}
+
 void
 dkwedge_print_wnames(void)
 {
diff --git a/sys/sys/disk.h b/sys/sys/disk.h
index 0f314a2ff040..5690d1b2c5bc 100644
--- a/sys/sys/disk.h
+++ b/sys/sys/disk.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: disk.h,v 1.66 2015/11/12 15:25:22 christos Exp $	*/
+/*	$NetBSD: disk.h,v 1.67 2016/04/27 02:19:12 christos Exp $	*/
 
 /*-
  * Copyright (c) 1996, 1997, 2004 The NetBSD Foundation, Inc.
@@ -547,9 +547,11 @@ int	dkwedge_list(struct disk *, struct dkwedge_list *, struct lwp *);
 void	dkwedge_discover(struct disk *);
 int	dkwedge_read(struct disk *, struct vnode *, daddr_t, void *, size_t);
 device_t dkwedge_find_by_wname(const char *);
+device_t dkwedge_find_by_parent(const char *, size_t *);
 const char *dkwedge_get_parent_name(dev_t);
 void	dkwedge_print_wnames(void);
 device_t dkwedge_find_partition(device_t, daddr_t, uint64_t);
+
 #endif
 
 #endif /* _SYS_DISK_H_ */