Enforce ca_activate tree-walks over the entire heirarchy for all events,

cleaning up some shutdown-hook related code on the way.
(A few drivers related to sparc are still skipped at kettenis' request)
ok kettenis mlarkin, tested by many others too

59 files changed, 476 insertions, 350 deletions

diff --git a/sys/arch/amd64/amd64/bios.c b/sys/arch/amd64/amd64/bios.c
index a4cb791b6be..5b16838effa 100644
--- a/sys/arch/amd64/amd64/bios.c
+++ b/sys/arch/amd64/amd64/bios.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bios.c,v 1.24 2013/04/24 08:23:44 blambert Exp $	*/
+/*	$OpenBSD: bios.c,v 1.25 2013/05/30 16:15:01 deraadt Exp $	*/
 /*
  * Copyright (c) 2006 Gordon Willem Klok <gklok@cogeco.ca>
  *
@@ -55,8 +55,7 @@ int bios_print(void *, const char *);
 char *fixstring(char *);
 
 struct cfattach bios_ca = {
-	sizeof(struct bios_softc), bios_match, bios_attach, NULL,
-	config_activate_children
+	sizeof(struct bios_softc), bios_match, bios_attach
 };
 
 struct cfdriver bios_cd = {
diff --git a/sys/arch/amd64/amd64/mainbus.c b/sys/arch/amd64/amd64/mainbus.c
index 19e58621307..2742ca00bc2 100644
--- a/sys/arch/amd64/amd64/mainbus.c
+++ b/sys/arch/amd64/amd64/mainbus.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mainbus.c,v 1.26 2012/10/04 08:32:20 ehrhardt Exp $	*/
+/*	$OpenBSD: mainbus.c,v 1.27 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: mainbus.c,v 1.1 2003/04/26 18:39:29 fvdl Exp $	*/
 
 /*
@@ -72,8 +72,7 @@ int	mainbus_match(struct device *, void *, void *);
 void	mainbus_attach(struct device *, struct device *, void *);
 
 struct cfattach mainbus_ca = {
-	sizeof(struct device), mainbus_match, mainbus_attach, NULL,
-	config_activate_children
+	sizeof(struct device), mainbus_match, mainbus_attach
 };
 
 struct cfdriver mainbus_cd = {
diff --git a/sys/arch/amd64/pci/pcib.c b/sys/arch/amd64/pci/pcib.c
index 86cbe212d06..556ba549c71 100644
--- a/sys/arch/amd64/pci/pcib.c
+++ b/sys/arch/amd64/pci/pcib.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pcib.c,v 1.5 2010/07/08 20:17:54 deraadt Exp $	*/
+/*	$OpenBSD: pcib.c,v 1.6 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: pcib.c,v 1.6 1997/06/06 23:29:16 thorpej Exp $	*/
 
 /*-
@@ -50,8 +50,7 @@ void	pcib_callback(struct device *);
 int	pcib_print(void *, const char *);
 
 struct cfattach pcib_ca = {
-	sizeof(struct device), pcibmatch, pcibattach,
-	NULL, config_activate_children
+	sizeof(struct device), pcibmatch, pcibattach
 };
 
 struct cfdriver pcib_cd = {
diff --git a/sys/arch/arm/mainbus/mainbus.c b/sys/arch/arm/mainbus/mainbus.c
index d50219f78b1..6ad3e8ff755 100644
--- a/sys/arch/arm/mainbus/mainbus.c
+++ b/sys/arch/arm/mainbus/mainbus.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mainbus.c,v 1.6 2011/09/22 17:45:59 miod Exp $	*/
+/*	$OpenBSD: mainbus.c,v 1.7 2013/05/30 16:15:01 deraadt Exp $	*/
 /* $NetBSD: mainbus.c,v 1.3 2001/06/13 17:52:43 nathanw Exp $ */
 
 /*
@@ -59,8 +59,7 @@ int mainbussearch(struct device *,  void *, void *);
 /* attach and device structures for the device */
 
 struct cfattach mainbus_ca = {
-	sizeof(struct device), mainbusmatch, mainbusattach, NULL,
-	config_activate_children
+	sizeof(struct device), mainbusmatch, mainbusattach
 };
 
 struct cfdriver mainbus_cd = {
diff --git a/sys/arch/arm/xscale/pxa2x0.c b/sys/arch/arm/xscale/pxa2x0.c
index ce543461ba2..9b9528c66c2 100644
--- a/sys/arch/arm/xscale/pxa2x0.c
+++ b/sys/arch/arm/xscale/pxa2x0.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pxa2x0.c,v 1.16 2010/08/30 21:35:55 deraadt Exp $ */
+/*	$OpenBSD: pxa2x0.c,v 1.17 2013/05/30 16:15:01 deraadt Exp $ */
 /*	$NetBSD: pxa2x0.c,v 1.5 2003/12/12 16:42:44 thorpej Exp $ */
 
 /*
@@ -129,8 +129,7 @@ CFATTACH_DECL(pxaip, sizeof(struct pxaip_softc),
     pxaip_match, pxaip_attach, NULL, NULL);
 #else
 struct cfattach pxaip_ca = {
-	sizeof(struct pxaip_softc), pxaip_match, pxaip_attach, NULL,
-	config_activate_children
+	sizeof(struct pxaip_softc), pxaip_match, pxaip_attach
 };
 
 struct cfdriver pxaip_cd = {
diff --git a/sys/arch/i386/pci/ichpcib.c b/sys/arch/i386/pci/ichpcib.c
index c35e2259130..eb1afd62779 100644
--- a/sys/arch/i386/pci/ichpcib.c
+++ b/sys/arch/i386/pci/ichpcib.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ichpcib.c,v 1.26 2012/08/16 18:42:04 tedu Exp $	*/
+/*	$OpenBSD: ichpcib.c,v 1.27 2013/05/30 16:15:01 deraadt Exp $	*/
 /*
  * Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
  *
@@ -68,11 +68,7 @@ struct timecounter ichpcib_timecounter = {
 };
 
 struct cfattach ichpcib_ca = {
-	sizeof(struct ichpcib_softc),
-	ichpcib_match,
-	ichpcib_attach,
-	NULL,
-	config_activate_children
+	sizeof(struct ichpcib_softc), ichpcib_match, ichpcib_attach
 };
 
 struct cfdriver ichpcib_cd = {
diff --git a/sys/arch/i386/pci/pcib.c b/sys/arch/i386/pci/pcib.c
index 75bffbe51e4..aa620748d31 100644
--- a/sys/arch/i386/pci/pcib.c
+++ b/sys/arch/i386/pci/pcib.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pcib.c,v 1.23 2010/07/08 20:17:54 deraadt Exp $	*/
+/*	$OpenBSD: pcib.c,v 1.24 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: pcib.c,v 1.6 1997/06/06 23:29:16 thorpej Exp $	*/
 
 /*-
@@ -54,8 +54,7 @@ void	pcib_callback(struct device *);
 int	pcib_print(void *, const char *);
 
 struct cfattach pcib_ca = {
-	sizeof(struct device), pcibmatch, pcibattach, NULL,
-	config_activate_children
+	sizeof(struct device), pcibmatch, pcibattach
 };
 
 struct cfdriver pcib_cd = {
diff --git a/sys/arch/i386/pci/piixpcib.c b/sys/arch/i386/pci/piixpcib.c
index cc0370ea5e1..b94d5fc6f0d 100644
--- a/sys/arch/i386/pci/piixpcib.c
+++ b/sys/arch/i386/pci/piixpcib.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: piixpcib.c,v 1.7 2010/07/08 20:17:54 deraadt Exp $ */
+/*	$OpenBSD: piixpcib.c,v 1.8 2013/05/30 16:15:01 deraadt Exp $ */
 
 /*
  * Copyright (c) 2007 Stefan Sperling <stsp@stsp.in-berlin.de>
@@ -117,9 +117,7 @@ extern void	p3_update_cpuspeed(void);
 struct cfattach piixpcib_ca = {
 	sizeof(struct piixpcib_softc),
 	piixpcib_match,
-	piixpcib_attach,
-	NULL,
-	config_activate_children
+	piixpcib_attach
 };
 
 struct cfdriver piixpcib_cd = {
diff --git a/sys/arch/loongson/dev/bonito.c b/sys/arch/loongson/dev/bonito.c
index c6eee9e18b6..e1892465428 100644
--- a/sys/arch/loongson/dev/bonito.c
+++ b/sys/arch/loongson/dev/bonito.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bonito.c,v 1.22 2012/10/03 11:18:20 miod Exp $	*/
+/*	$OpenBSD: bonito.c,v 1.23 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: bonito_mainbus.c,v 1.11 2008/04/28 20:23:10 martin Exp $	*/
 /*	$NetBSD: bonito_pci.c,v 1.5 2008/04/28 20:23:28 martin Exp $	*/
 
@@ -82,8 +82,7 @@ int	bonito_match(struct device *, void *, void *);
 void	bonito_attach(struct device *, struct device *, void *);
 
 const struct cfattach bonito_ca = {
-	sizeof(struct bonito_softc), bonito_match, bonito_attach,
-	NULL, config_activate_children
+	sizeof(struct bonito_softc), bonito_match, bonito_attach
 };
 
 struct cfdriver bonito_cd = {
diff --git a/sys/arch/loongson/dev/mainbus.c b/sys/arch/loongson/dev/mainbus.c
index b423aef7051..ee8c6b6eff3 100644
--- a/sys/arch/loongson/dev/mainbus.c
+++ b/sys/arch/loongson/dev/mainbus.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mainbus.c,v 1.7 2013/01/14 21:18:47 pirofti Exp $ */
+/*	$OpenBSD: mainbus.c,v 1.8 2013/05/30 16:15:01 deraadt Exp $ */
 
 /*
  * Copyright (c) 2001-2003 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -37,8 +37,7 @@ void	mainbus_attach(struct device *, struct device *, void *);
 int	mainbus_print(void *, const char *);
 
 const struct cfattach mainbus_ca = {
-	sizeof(struct device), mainbus_match, mainbus_attach,
-	NULL, config_activate_children
+	sizeof(struct device), mainbus_match, mainbus_attach
 };
 
 struct cfdriver mainbus_cd = {
diff --git a/sys/arch/macppc/dev/esp.c b/sys/arch/macppc/dev/esp.c
index 7ce1699c3b2..1b9acd707d7 100644
--- a/sys/arch/macppc/dev/esp.c
+++ b/sys/arch/macppc/dev/esp.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: esp.c,v 1.8 2012/12/05 23:20:13 deraadt Exp $ */
+/* $OpenBSD: esp.c,v 1.9 2013/05/30 16:15:01 deraadt Exp $ */
 
 /*-
  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
@@ -129,7 +129,8 @@ int espmatch(struct device *, void *, void *);
 
 /* Linkup to the rest of the kernel */
 struct cfattach esp_ca = {
-	sizeof(struct esp_softc), espmatch, espattach
+	sizeof(struct esp_softc), espmatch, espattach,
+	NULL, espactivate
 };
 
 struct scsi_adapter esp_switch = {
@@ -165,7 +166,6 @@ struct ncr53c9x_glue esp_glue = {
 };
 
 static int espdmaintr(struct esp_softc *);
-static void esp_shutdownhook(void *);
 
 int
 espmatch(struct device *parent, void *cf, void *aux)
@@ -258,9 +258,6 @@ espattach(struct device *parent, struct device *self, void *aux)
 	mac_intr_establish(parent, esc->sc_intr, IST_LEVEL, IPL_BIO,
 	    ncr53c9x_intr, sc, sc->sc_dev.dv_xname);
 
-	/* Reset SCSI bus when halt. */
-	shutdownhook_establish(esp_shutdownhook, sc);
-
 	/* Turn on target selection using the `DMA' method */
 	sc->sc_features |= NCR_F_DMASELECT;
 
@@ -268,6 +265,23 @@ espattach(struct device *parent, struct device *self, void *aux)
 
 }
 
+int
+esp_activate(struct device *self, int act)
+{
+	struct ncr53c9x_softc *sc = self;
+	int ret = 0;
+
+	ret = config_activate_children(self, act);
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		NCRCMD(sc, NCRCMD_RSTSCSI);
+		break;
+	}
+
+	return (ret);
+}
+
 /*
  * Glue functions.
  */
@@ -452,11 +466,3 @@ espdmaintr(struct esp_softc *sc)
 
 	return 0;
 }
-
-void
-esp_shutdownhook(void *arg)
-{
-	struct ncr53c9x_softc *sc = arg;
-
-	NCRCMD(sc, NCRCMD_RSTSCSI);
-}
diff --git a/sys/arch/macppc/dev/mesh.c b/sys/arch/macppc/dev/mesh.c
index f512c68367c..61975fd2ee3 100644
--- a/sys/arch/macppc/dev/mesh.c
+++ b/sys/arch/macppc/dev/mesh.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mesh.c,v 1.29 2011/04/03 12:42:36 krw Exp $	*/
+/*	$OpenBSD: mesh.c,v 1.30 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: mesh.c,v 1.1 1999/02/19 13:06:03 tsubai Exp $	*/
 
 /*-
@@ -220,7 +220,8 @@ static inline void mesh_set_reg(struct mesh_softc *, int, int);
 
 int mesh_match(struct device *, void *, void *);
 void mesh_attach(struct device *, struct device *, void *);
-void mesh_shutdownhook(void *);
+int mesh_activate(struct device *, int);
+
 int mesh_intr(void *);
 void mesh_error(struct mesh_softc *, struct mesh_scb *, int, int);
 void mesh_select(struct mesh_softc *, struct mesh_scb *);
@@ -246,7 +247,8 @@ void mesh_timeout(void *);
 void mesh_minphys(struct buf *, struct scsi_link *);
 
 struct cfattach mesh_ca = {
-	sizeof(struct mesh_softc), mesh_match, mesh_attach
+	sizeof(struct mesh_softc), mesh_match, mesh_attach,
+	NULL, mesh_activate
 };
 
 struct cfdriver mesh_cd = {
@@ -366,9 +368,6 @@ mesh_attach(struct device *parent, struct device *self, void *aux)
 	mac_intr_establish(parent, sc->sc_irq, IST_LEVEL, IPL_BIO, mesh_intr,
 	    sc, sc->sc_dev.dv_xname);
 
-	/* Reset SCSI bus when halt. */
-	shutdownhook_establish(mesh_shutdownhook, sc);
-
 	return;
 nodbdma:
 	bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap);
@@ -378,6 +377,25 @@ noreg:
 	unmapiodev(sc->sc_reg, reg[1]);
 }
 
+int
+mesh_activate(struct device *self, int act)
+{
+	struct mesh_softc *sc = (struct mesh_softc *)self;
+	int ret = 0;
+
+	reg = config_activate_children(self, act);
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		/* Set to async mode. */
+		mesh_set_reg(sc, MESH_SYNC_PARAM, 2);
+		mesh_bus_reset(sc);
+		break;
+	}
+
+	return (ret);
+}
+
 #define MESH_SET_XFER(sc, count) do {					\
 	mesh_set_reg(sc, MESH_XFER_COUNT0, count);			\
 	mesh_set_reg(sc, MESH_XFER_COUNT1, count >> 8);			\
@@ -398,16 +416,6 @@ mesh_set_reg(struct mesh_softc *sc, int reg, int val)
 	out8(sc->sc_reg + reg, val);
 }
 
-void
-mesh_shutdownhook(void *arg)
-{
-	struct mesh_softc *sc = arg;
-
-	/* Set to async mode. */
-	mesh_set_reg(sc, MESH_SYNC_PARAM, 2);
-	mesh_bus_reset(sc);
-}
-
 #ifdef MESH_DEBUG
 static char scsi_phase[][8] = {
 	"DATAOUT",
diff --git a/sys/arch/macppc/dev/wdc_obio.c b/sys/arch/macppc/dev/wdc_obio.c
index f289f35fbe6..f95e17344c0 100644
--- a/sys/arch/macppc/dev/wdc_obio.c
+++ b/sys/arch/macppc/dev/wdc_obio.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: wdc_obio.c,v 1.29 2011/05/09 22:33:53 matthew Exp $	*/
+/*	$OpenBSD: wdc_obio.c,v 1.30 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: wdc_obio.c,v 1.15 2001/07/25 20:26:33 bouyer Exp $	*/
 
 /*-
@@ -92,7 +92,7 @@ int	wdc_obio_detach(struct device *, int);
 
 struct cfattach wdc_obio_ca = {
 	sizeof(struct wdc_obio_softc), wdc_obio_probe, wdc_obio_attach,
-	    wdc_obio_detach, config_activate_children
+	wdc_obio_detach
 };
 
 int	wdc_obio_dma_init(void *, int, int, void *, size_t, int);
diff --git a/sys/arch/sgi/dev/gbe.c b/sys/arch/sgi/dev/gbe.c
index 8efeeba9fd3..fec3fc5ed20 100644
--- a/sys/arch/sgi/dev/gbe.c
+++ b/sys/arch/sgi/dev/gbe.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: gbe.c,v 1.18 2013/05/27 19:37:45 miod Exp $ */
+/*	$OpenBSD: gbe.c,v 1.19 2013/05/30 16:15:01 deraadt Exp $ */
 
 /*
  * Copyright (c) 2007, 2008, 2009 Joel Sing <jsing@openbsd.org>
@@ -173,9 +173,11 @@ struct wsscreen_list gbe_screenlist = {
 
 int	gbe_match(struct device *, void *, void *);
 void	gbe_attach(struct device *, struct device *, void *);
+int	gbe_activate(struct device *, int);
 
 struct cfattach gbe_ca = {
-	sizeof (struct gbe_softc), gbe_match, gbe_attach
+	sizeof (struct gbe_softc), gbe_match, gbe_attach,
+	NULL, gbe_activate
 };
 
 struct cfdriver gbe_cd = {
@@ -238,8 +240,6 @@ gbe_attach(struct device *parent, struct device *self, void *aux)
 		    gbe_consdata.fb_size >> 20, gbe_consdata.width,
 		    gbe_consdata.height, gbe_consdata.depth);
 
-		shutdownhook_establish((void(*)(void *))gbe_disable, self);
-
 		waa.console = gsc->console;
 		waa.scrdata = &gbe_screenlist;
 		waa.accessops = &gbe_accessops;
@@ -381,8 +381,6 @@ gbe_attach(struct device *parent, struct device *self, void *aux)
 	screen->fb_phys = fb_dmamap->dm_segs[0].ds_addr;
 	screen->ro_phys = ro_dmamap->dm_segs[0].ds_addr;
 
-	shutdownhook_establish((void(*)(void *))gbe_disable, self);
-
 	gbe_init_screen(screen);
 	gbe_disable(gsc);
 	gbe_setup(gsc);
@@ -447,6 +445,21 @@ fail0:
 	bus_space_unmap(gsc->iot, gsc->ioh, GBE_REG_SIZE);
 }
 
+int
+gbe_activate(struct device *self, int act)
+{
+	struct gbe_softc *gsc = (struct gbe_softc *)self;
+	int ret = 0;
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		gbe_disable(gsc);
+		break;
+	}
+
+	return (ret);
+}
+
 /*
  * GBE hardware specific functions.
  */
diff --git a/sys/arch/sparc/dev/fd.c b/sys/arch/sparc/dev/fd.c
index d9e4d7b70e9..717631268a7 100644
--- a/sys/arch/sparc/dev/fd.c
+++ b/sys/arch/sparc/dev/fd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fd.c,v 1.82 2013/01/01 01:00:14 miod Exp $	*/
+/*	$OpenBSD: fd.c,v 1.83 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: fd.c,v 1.51 1997/05/24 20:16:19 pk Exp $	*/
 
 /*-
@@ -215,8 +215,6 @@ struct fd_softc {
 	int sc_cylin;		/* where we think the head is */
 	int sc_opts;		/* user-set options */
 
-	void	*sc_sdhook;	/* shutdownhook cookie */
-
 	TAILQ_ENTRY(fd_softc) sc_drivechain;
 	int sc_ops;		/* I/O ops since last switch */
 	struct buf sc_q;	/* head of buf chain */
@@ -228,9 +226,11 @@ struct fd_softc {
 /* floppy driver configuration */
 int	fdmatch(struct device *, void *, void *);
 void	fdattach(struct device *, struct device *, void *);
+int	fdactivate(struct device *, int);
 
 struct cfattach fd_ca = {
-	sizeof(struct fd_softc), fdmatch, fdattach
+	sizeof(struct fd_softc), fdmatch, fdattach,
+	NULL, fdactivate
 };
 
 struct cfdriver fd_cd = {
@@ -649,9 +649,22 @@ fdattach(parent, self, aux)
 	 */
 	if (fa->fa_bootpath)
 		fa->fa_bootpath->dev = &fd->sc_dv;
+}
+
+int
+fdactivate(struct device *self, int act)
+{
+	struct fd_softc *sc = (struct fd_softc *)self;
+	int ret = 0;
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		/* Make sure the drive motor gets turned off at shutdown time. */
+		fd_motor_off(sc);
+		break;
+	}
 
-	/* Make sure the drive motor gets turned off at shutdown time. */
-	fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd);
+	return (ret);
 }
 
 __inline struct fd_type *
diff --git a/sys/arch/sparc64/dev/fd.c b/sys/arch/sparc64/dev/fd.c
index 529cbb64ed7..d35aaa680cc 100644
--- a/sys/arch/sparc64/dev/fd.c
+++ b/sys/arch/sparc64/dev/fd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fd.c,v 1.37 2013/01/01 01:00:14 miod Exp $	*/
+/*	$OpenBSD: fd.c,v 1.38 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: fd.c,v 1.112 2003/08/07 16:29:35 agc Exp $	*/
 
 /*-
@@ -265,8 +265,6 @@ struct fd_softc {
 	int sc_cylin;		/* where we think the head is */
 	int sc_opts;		/* user-set options */
 
-	void	*sc_sdhook;	/* shutdownhook cookie */
-
 	TAILQ_ENTRY(fd_softc) sc_drivechain;
 	int sc_ops;		/* I/O ops since last switch */
 	struct buf sc_q;	/* pending I/O requests */
@@ -275,9 +273,11 @@ struct fd_softc {
 /* floppy driver configuration */
 int	fdmatch(struct device *, void *, void *);
 void	fdattach(struct device *, struct device *, void *);
+int	fdactivate(struct device *, int);
 
 struct cfattach fd_ca = {
-	sizeof(struct fd_softc), fdmatch, fdattach
+	sizeof(struct fd_softc), fdmatch, fdattach,
+	NULL, fdactivate
 };
 
 struct cfdriver fd_cd = {
@@ -670,9 +670,21 @@ fdattach(parent, self, aux)
 	fd->sc_dk.dk_flags = DKF_NOLABELREAD;
 	fd->sc_dk.dk_name = fd->sc_dv.dv_xname;
 	disk_attach(&fd->sc_dv, &fd->sc_dk);
+}
+
+int
+fdactivate(struct device *self, int act)
+{
+	int ret = 0;
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		/* Make sure the drive motor gets turned off at shutdown time. */
+		fd_motor_off(self);
+		break;
+	}
 
-	/* Make sure the drive motor gets turned off at shutdown time. */
-	fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd);
+	return (ret);
 }
 
 __inline struct fd_type *
diff --git a/sys/arch/sparc64/dev/lom.c b/sys/arch/sparc64/dev/lom.c
index a4ce57ba5e8..883b90df077 100644
--- a/sys/arch/sparc64/dev/lom.c
+++ b/sys/arch/sparc64/dev/lom.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: lom.c,v 1.23 2012/10/17 22:32:01 deraadt Exp $	*/
+/*	$OpenBSD: lom.c,v 1.24 2013/05/30 16:15:01 deraadt Exp $	*/
 /*
  * Copyright (c) 2009 Mark Kettenis
  *
@@ -179,9 +179,11 @@ struct lom_softc {
 
 int	lom_match(struct device *, void *, void *);
 void	lom_attach(struct device *, struct device *, void *);
+int	lom_activate(struct device *, int);
 
 struct cfattach lom_ca = {
-	sizeof(struct lom_softc), lom_match, lom_attach
+	sizeof(struct lom_softc), lom_match, lom_attach,
+	NULL, lom_activate
 };
 
 struct cfdriver lom_cd = {
@@ -357,8 +359,20 @@ lom_attach(struct device *parent, struct device *self, void *aux)
 	printf(": %s rev %d.%d\n",
 	    sc->sc_type < LOM_LOMLITE2 ? "LOMlite" : "LOMlite2",
 	    fw_rev >> 4, fw_rev & 0x0f);
+}
+
+int
+lom_activate(struct device *self, int act)
+{
+	int ret = 0;
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		lom_shutdown(self);
+		break;
+	}
 
-	shutdownhook_establish(lom_shutdown, sc);
+	return (ret);
 }
 
 int
diff --git a/sys/arch/sparc64/dev/sab.c b/sys/arch/sparc64/dev/sab.c
index abbcbd8b334..000003495ec 100644
--- a/sys/arch/sparc64/dev/sab.c
+++ b/sys/arch/sparc64/dev/sab.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sab.c,v 1.30 2010/07/02 17:27:01 nicm Exp $	*/
+/*	$OpenBSD: sab.c,v 1.31 2013/05/30 16:15:01 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2001 Jason L. Wright (jason@thought.net)
@@ -121,6 +121,7 @@ struct sabtty_softc *sabtty_cons_output;
 
 int sab_match(struct device *, void *, void *);
 void sab_attach(struct device *, struct device *, void *);
+
 int sab_print(void *, const char *);
 int sab_intr(void *);
 void sab_softintr(void *);
@@ -130,6 +131,8 @@ void sab_cnpollc(dev_t, int);
 
 int sabtty_match(struct device *, void *, void *);
 void sabtty_attach(struct device *, struct device *, void *);
+int sabtty_activate(struct device *, int);
+
 void sabtty_start(struct tty *);
 int sabtty_param(struct tty *, struct termios *);
 int sabtty_intr(struct sabtty_softc *, int *);
@@ -143,7 +146,7 @@ int sabtty_speed(int);
 void sabtty_console_flags(struct sabtty_softc *);
 void sabtty_console_speed(struct sabtty_softc *);
 void sabtty_cnpollc(struct sabtty_softc *, int);
-void sabtty_shutdown(void *);
+void sabtty_shutdown(struct sabtty_softc *);
 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *);
 
 int sabttyopen(dev_t, int, int, struct proc *);
@@ -166,7 +169,8 @@ struct cfdriver sab_cd = {
 };
 
 struct cfattach sabtty_ca = {
-	sizeof(struct sabtty_softc), sabtty_match, sabtty_attach
+	sizeof(struct sabtty_softc), sabtty_match, sabtty_attach,
+	NULL, sabtty_activate
 };
 
 struct cfdriver sabtty_cd = {
@@ -305,6 +309,22 @@ sab_attach(parent, self, aux)
 }
 
 int
+sabtty_activate(struct device *self, int act)
+{
+	struct sabtty_softc *sc = (struct sabtty_softc *)self;
+	int ret = 0;
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		if (sc->sc_flags & SABTTYF_CONS_IN)
+			sabtty_shutdown(sc);
+		break;
+	}
+
+	return (ret);
+}
+
+int
 sab_print(args, name)
 	void *args;
 	const char *name;
@@ -444,7 +464,6 @@ sabtty_attach(parent, self, aux)
 			cn_tab->cn_pollc = sab_cnpollc;
 			cn_tab->cn_getc = sab_cngetc;
 			cn_tab->cn_dev = makedev(77/*XXX*/, self->dv_unit);
-			shutdownhook_establish(sabtty_shutdown, sc);
 		}
 
 		if (sc->sc_flags & SABTTYF_CONS_OUT) {
@@ -1389,11 +1408,8 @@ sabtty_abort(sc)
 }
 
 void
-sabtty_shutdown(vsc)
-	void *vsc;
+sabtty_shutdown(struct sabtty_softc *sc)
 {
-	struct sabtty_softc *sc = vsc;
-
 	/* Have to put the chip back into single char mode */
 	sc->sc_flags |= SABTTYF_DONTDDB;
 	SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF);
diff --git a/sys/arch/zaurus/dev/zaurus_apm.c b/sys/arch/zaurus/dev/zaurus_apm.c
index 431aa28a1b2..8a694a55cc5 100644
--- a/sys/arch/zaurus/dev/zaurus_apm.c
+++ b/sys/arch/zaurus/dev/zaurus_apm.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: zaurus_apm.c,v 1.22 2012/10/17 22:49:27 deraadt Exp $	*/
+/*	$OpenBSD: zaurus_apm.c,v 1.23 2013/05/30 16:15:01 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005 Uwe Stuehler <uwe@bsdx.de>
@@ -62,9 +62,11 @@ struct zapm_softc {
 
 int	apm_match(struct device *, void *, void *);
 void	apm_attach(struct device *, struct device *, void *);
+int	apm_activate(struct device *, int);
 
 struct cfattach apm_pxaip_ca = {
-        sizeof (struct zapm_softc), apm_match, apm_attach
+        sizeof (struct zapm_softc), apm_match, apm_attach,
+	NULL, apm_activate
 };
 extern struct cfdriver apm_cd;
 
@@ -131,9 +133,6 @@ const	struct timeval zapm_battchkrate = { 60, 0 };
 
 /* Prototypes */
 
-#if 0
-void	zapm_shutdown(void *);
-#endif
 int	zapm_acintr(void *);
 int	zapm_bcintr(void *);
 int	zapm_ac_on(void);
@@ -198,23 +197,24 @@ apm_attach(struct device *parent, struct device *self, void *aux)
 
 	pxa2x0_apm_attach_sub(&sc->sc);
 
-#if 0
-	(void)shutdownhook_establish(zapm_shutdown, NULL);
-#endif
-
 	cpu_setperf = pxa2x0_setperf;
 	cpu_cpuspeed = pxa2x0_cpuspeed;
 }
 
-#if 0
-void
-zapm_shutdown(void *v)
+int
+apm_activate(struct device *self, int act)
 {
-	struct zapm_softc *sc = v;
+	struct zapm_softc *sc = (struct zapm_softc *)self;
+	int ret = 0;
 
-	zapm_enable_charging(sc, 0);
+	switch (act) {
+	case DVACT_POWERDOWN:
+		zapm_enable_charging(sc, 0);
+		break;
+	}
+
+	return (ret);
 }
-#endif
 
 int
 zapm_acintr(void *v)
diff --git a/sys/arch/zaurus/zaurus/zaurus_lcd.c b/sys/arch/zaurus/zaurus/zaurus_lcd.c
index e9f3d9694f9..89fb852c5cc 100644
--- a/sys/arch/zaurus/zaurus/zaurus_lcd.c
+++ b/sys/arch/zaurus/zaurus/zaurus_lcd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: zaurus_lcd.c,v 1.24 2010/09/07 16:21:41 deraadt Exp $	*/
+/*	$OpenBSD: zaurus_lcd.c,v 1.25 2013/05/30 16:15:01 deraadt Exp $	*/
 /* $NetBSD: lubbock_lcd.c,v 1.1 2003/08/09 19:38:53 bsh Exp $ */
 
 /*
@@ -399,6 +399,7 @@ int
 lcd_activate(struct device *self, int act)
 {
 	struct pxa2x0_lcd_softc *sc = (struct pxa2x0_lcd_softc *)self;
+	int ret = 0;
 
 	switch (act) {
 	case DVACT_SUSPEND:
@@ -409,6 +410,9 @@ lcd_activate(struct device *self, int act)
 		pxa2x0_lcd_resume(sc);
 		lcd_set_brightness(lcd_get_brightness());
 		break;
+	case DVACT_POWERDOWN:
+		ret = config_activate_children(self, act);
+		break;
 	}
-	return 0;
+	return (ret);
 }
diff --git a/sys/dev/acpi/acpi.c b/sys/dev/acpi/acpi.c
index 603122a5f7e..8a43fb85352 100644
--- a/sys/dev/acpi/acpi.c
+++ b/sys/dev/acpi/acpi.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: acpi.c,v 1.243 2013/04/18 18:30:41 deraadt Exp $ */
+/* $OpenBSD: acpi.c,v 1.244 2013/05/30 16:15:01 deraadt Exp $ */
 /*
  * Copyright (c) 2005 Thorsten Lockert <tholo@sigmasoft.com>
  * Copyright (c) 2005 Jordan Hargrave <jordan@openbsd.org>
@@ -154,8 +154,7 @@ void	acpi_disable_allgpes(struct acpi_softc *);
 extern struct aml_node aml_root;
 
 struct cfattach acpi_ca = {
-	sizeof(struct acpi_softc), acpi_match, acpi_attach, NULL,
-	config_activate_children
+	sizeof(struct acpi_softc), acpi_match, acpi_attach
 };
 
 struct cfdriver acpi_cd = {
diff --git a/sys/dev/cardbus/cardbus.c b/sys/dev/cardbus/cardbus.c
index 6786f0fb293..4e8d4d814e8 100644
--- a/sys/dev/cardbus/cardbus.c
+++ b/sys/dev/cardbus/cardbus.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cardbus.c,v 1.45 2010/08/25 21:37:59 kettenis Exp $	*/
+/*	$OpenBSD: cardbus.c,v 1.46 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: cardbus.c,v 1.24 2000/04/02 19:11:37 mycroft Exp $	*/
 
 /*
@@ -83,8 +83,7 @@ STATIC void disable_function(struct cardbus_softc *, int);
 
 
 struct cfattach cardbus_ca = {
-	sizeof(struct cardbus_softc), cardbusmatch, cardbusattach,
-	NULL, config_activate_children
+	sizeof(struct cardbus_softc), cardbusmatch, cardbusattach
 };
 
 struct cfdriver cardbus_cd = {
diff --git a/sys/dev/cardbus/cardslot.c b/sys/dev/cardbus/cardslot.c
index 0061e48ec32..d4fb6b41f85 100644
--- a/sys/dev/cardbus/cardslot.c
+++ b/sys/dev/cardbus/cardslot.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cardslot.c,v 1.14 2010/08/25 21:37:59 kettenis Exp $	*/
+/*	$OpenBSD: cardslot.c,v 1.15 2013/05/30 16:15:01 deraadt Exp $	*/
 /*	$NetBSD: cardslot.c,v 1.9 2000/03/22 09:35:06 haya Exp $	*/
 
 /*
@@ -68,8 +68,7 @@ STATIC int cardslot_16_print(void *, const char *);
 STATIC int cardslot_16_submatch(struct device *, void *,void *);
 
 struct cfattach cardslot_ca = {
-	sizeof(struct cardslot_softc), cardslotmatch, cardslotattach,
-	NULL, config_activate_children
+	sizeof(struct cardslot_softc), cardslotmatch, cardslotattach
 };
 
 struct cfdriver cardslot_cd = {
diff --git a/sys/dev/flash.c b/sys/dev/flash.c
index 8f5dd8dd48f..5cc8c817417 100644
--- a/sys/dev/flash.c
+++ b/sys/dev/flash.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flash.c,v 1.24 2011/07/06 04:49:36 matthew Exp $	*/
+/*	$OpenBSD: flash.c,v 1.25 2013/05/30 16:15:01 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005 Uwe Stuehler <uwe@openbsd.org>
@@ -172,13 +172,6 @@ flashdetach(struct device *self, int flags)
 	return 0;
 }
 
-int
-flashactivate(struct device *self, int act)
-{
-	/* XXX anything to be done here? */
-	return 0;
-}
-
 /*
  * Flash controller and chip functions
  */
diff --git a/sys/dev/flashvar.h b/sys/dev/flashvar.h
index 1985a6b01ef..0541cbefb03 100644
--- a/sys/dev/flashvar.h
+++ b/sys/dev/flashvar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flashvar.h,v 1.5 2009/10/13 19:33:16 pirofti Exp $	*/
+/*	$OpenBSD: flashvar.h,v 1.6 2013/05/30 16:15:01 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005 Uwe Stuehler <uwe@openbsd.org>
@@ -116,7 +116,6 @@ struct flash_softc {
 
 void	 flashattach(struct flash_softc *, struct flash_ctl_tag *, void *);
 int	 flashdetach(struct device *, int);
-int	 flashactivate(struct device *, int);
 
 u_int8_t flash_reg8_read(struct flash_softc *, int);
 void	 flash_reg8_read_page(struct flash_softc *, caddr_t, caddr_t);
diff --git a/sys/dev/i2o/iop.c b/sys/dev/i2o/iop.c
index 91f8da3d670..1b00a6720a7 100644
--- a/sys/dev/i2o/iop.c
+++ b/sys/dev/i2o/iop.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: iop.c,v 1.37 2010/01/13 00:31:04 chl Exp $	*/
+/*	$OpenBSD: iop.c,v 1.38 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: iop.c,v 1.12 2001/03/21 14:27:05 ad Exp $	*/
 
 /*-
@@ -204,7 +204,6 @@ void	iop_configure_devices(struct iop_softc *, int, int);
 void	iop_devinfo(int, char *, size_t);
 int	iop_print(void *, const char *);
 int	iop_reconfigure(struct iop_softc *, u_int);
-void	iop_shutdown(void *);
 int	iop_submatch(struct device *, void *, void *);
 #ifdef notyet
 int	iop_vendor_print(void *, const char *);
@@ -376,10 +375,6 @@ iop_init(struct iop_softc *sc, const char *intrstr)
 		goto bail_out;
 	}
 
-	/* Configure shutdown hook before we start any device activity. */
-	if (iop_sdh == NULL)
-		iop_sdh = shutdownhook_establish(iop_shutdown, NULL);
-
 	/* Ensure interrupts are enabled at the IOP. */
 	mask = iop_inl(sc, IOP_REG_INTR_MASK);
 	iop_outl(sc, IOP_REG_INTR_MASK, mask & ~IOP_INTR_OFIFO);
@@ -858,35 +853,27 @@ iop_submatch(struct device *parent, void *vcf, void *aux)
  * Shut down all configured IOPs.
  */ 
 void
-iop_shutdown(void *junk)
+iop_shutdown(void *v)
 {
-	struct iop_softc *sc;
-	int i;
+	struct iop_softc *sc = v;
 
-	printf("shutting down iop devices...");
-
-	for (i = 0; i < iop_cd.cd_ndevs; i++) {
-		if (!(sc = (struct iop_softc *)device_lookup(&iop_cd, i)))
-			continue;
-		if ((sc->sc_flags & IOP_ONLINE) == 0)
-			continue;
+	if ((sc->sc_flags & IOP_ONLINE) == 0)
+		return;
 
-		iop_simple_cmd(sc, I2O_TID_IOP, I2O_EXEC_SYS_QUIESCE, IOP_ICTX,
-		    0, 5000);
+	iop_simple_cmd(sc, I2O_TID_IOP, I2O_EXEC_SYS_QUIESCE, IOP_ICTX,
+	    0, 5000);
 
-		if (letoh16(sc->sc_status.orgid) != I2O_ORG_AMI) {
-			/*
-			 * Some AMI firmware revisions will go to sleep and
-			 * never come back after this.
-			 */
-			iop_simple_cmd(sc, I2O_TID_IOP, I2O_EXEC_IOP_CLEAR,
-			    IOP_ICTX, 0, 1000);
-		}
+	if (letoh16(sc->sc_status.orgid) != I2O_ORG_AMI) {
+		/*
+		 * Some AMI firmware revisions will go to sleep and
+		 * never come back after this.
+		 */
+		iop_simple_cmd(sc, I2O_TID_IOP, I2O_EXEC_IOP_CLEAR,
+		    IOP_ICTX, 0, 1000);
 	}
 
 	/* Wait.  Some boards could still be flushing, stupidly enough. */
 	delay(5000*1000);
-	printf(" done.\n");
 }
 
 /*
diff --git a/sys/dev/i2o/iopvar.h b/sys/dev/i2o/iopvar.h
index 60a19493101..13ebdc51320 100644
--- a/sys/dev/i2o/iopvar.h
+++ b/sys/dev/i2o/iopvar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: iopvar.h,v 1.10 2009/04/02 18:44:49 oga Exp $	*/
+/*	$OpenBSD: iopvar.h,v 1.11 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: iopvar.h,v 1.5 2001/03/20 13:01:49 ad Exp $	*/
 
 /*-
@@ -167,6 +167,7 @@ int	iop_param_op(struct iop_softc *, int, struct iop_initiator *, int,
 int	iop_print_ident(struct iop_softc *, int);
 int	iop_simple_cmd(struct iop_softc *, int, int, int, int, int);
 void	iop_strvis(struct iop_softc *, const char *, int, char *, int);
+void	iop_shutdown(void *);
 
 void	iop_initiator_register(struct iop_softc *, struct iop_initiator *);
 void	iop_initiator_unregister(struct iop_softc *, struct iop_initiator *);
diff --git a/sys/dev/ic/aac.c b/sys/dev/ic/aac.c
index 61d936b7bca..bf1938d1b4f 100644
--- a/sys/dev/ic/aac.c
+++ b/sys/dev/ic/aac.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: aac.c,v 1.54 2011/07/17 22:46:48 matthew Exp $	*/
+/*	$OpenBSD: aac.c,v 1.55 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 2000 Michael Smith
@@ -276,11 +276,6 @@ aac_attach(struct aac_softc *sc)
 	sc->aifflags = 0;
 	kthread_create_deferred(aac_create_thread, sc);
 
-#if 0
-	/* Register the shutdown method to only be called post-dump */
-	sc->aac_sdh = shutdownhook_establish(aac_shutdown, (void *)sc);
-#endif
-
 	return (0);
 }
 
diff --git a/sys/dev/ic/aic79xx.c b/sys/dev/ic/aic79xx.c
index 6fed99b0324..0e954fc502e 100644
--- a/sys/dev/ic/aic79xx.c
+++ b/sys/dev/ic/aic79xx.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: aic79xx.c,v 1.50 2012/12/05 23:20:16 deraadt Exp $	*/
+/*	$OpenBSD: aic79xx.c,v 1.51 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2004 Milos Urbanek, Kenneth R. Westerback & Marco Peereboom
@@ -6343,9 +6343,6 @@ init_done:
 	ahd_restart(ahd);
 	aic_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_MS,
 			ahd_stat_timer, ahd);
-
-	/* We have to wait until after any system dumps... */
-        ahd->shutdown_hook = shutdownhook_establish(ahd_shutdown, ahd);
 	return (0);
 }
 
diff --git a/sys/dev/ic/aic79xx_openbsd.c b/sys/dev/ic/aic79xx_openbsd.c
index a2184e4c593..760fae2a9a5 100644
--- a/sys/dev/ic/aic79xx_openbsd.c
+++ b/sys/dev/ic/aic79xx_openbsd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: aic79xx_openbsd.c,v 1.39 2012/12/05 23:20:16 deraadt Exp $	*/
+/*	$OpenBSD: aic79xx_openbsd.c,v 1.40 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2004 Milos Urbanek, Kenneth R. Westerback & Marco Peereboom
@@ -612,9 +612,6 @@ ahd_detach(struct device *self, int flags)
 	if (ahd->sc_child != NULL)
 		rv = config_detach((void *)ahd->sc_child, flags);
 
-	if (ahd->shutdown_hook != NULL)
-		shutdownhook_disestablish(ahd->shutdown_hook);
-
 	ahd_free(ahd);
 
 	return rv;
diff --git a/sys/dev/ic/cac.c b/sys/dev/ic/cac.c
index 4c299cdd8dd..d19899b87bc 100644
--- a/sys/dev/ic/cac.c
+++ b/sys/dev/ic/cac.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cac.c,v 1.49 2011/10/27 00:18:23 krw Exp $	*/
+/*	$OpenBSD: cac.c,v 1.50 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: cac.c,v 1.15 2000/11/08 19:20:35 ad Exp $	*/
 
 /*
@@ -111,8 +111,6 @@ int	cac_ccb_start(struct cac_softc *, struct cac_ccb *);
 int	cac_cmd(struct cac_softc *sc, int command, void *data, int datasize,
 	int drive, int blkno, int flags, struct scsi_xfer *xs);
 int	cac_get_dinfo(struct cac_softc *sc, int target);
-int	cac_flush(struct cac_softc *sc);
-void	cac_shutdown(void *);
 void	cac_copy_internal_data(struct scsi_xfer *xs, void *v, size_t size);
 
 struct	cac_ccb *cac_l0_completed(struct cac_softc *);
@@ -131,8 +129,6 @@ void	cac_sensor_refresh(void *);
 #endif
 #endif /* NBIO > 0 */
 
-void	*cac_sdh;	/* shutdown hook */
-
 const
 struct cac_linkage cac_l0 = {
 	cac_l0_completed,
@@ -256,10 +252,6 @@ cac_init(struct cac_softc *sc, int startfw)
 
 	config_found(&sc->sc_dv, &saa, scsiprint);
 
-	/* Set our `shutdownhook' before we start any device activity. */
-	if (cac_sdh == NULL)
-		cac_sdh = shutdownhook_establish(cac_shutdown, NULL);
-
 	(*sc->sc_cl->cl_intr_enable)(sc, 1);
 
 #if NBIO > 0
@@ -292,23 +284,6 @@ cac_flush(sc)
 }
 
 /*
- * Shut down all `cac' controllers.
- */
-void
-cac_shutdown(void *cookie)
-{
-	extern struct cfdriver cac_cd;
-	struct cac_softc *sc;
-	int i;
-
-	for (i = 0; i < cac_cd.cd_ndevs; i++) {
-		if ((sc = (struct cac_softc *)device_lookup(&cac_cd, i)) == NULL)
-			continue;
-		cac_flush(sc);
-	}
-}
-
-/*
  * Handle an interrupt from the controller: process finished CCBs and
  * dequeue any waiting CCBs.
  */
diff --git a/sys/dev/ic/cacvar.h b/sys/dev/ic/cacvar.h
index 4026323d578..0138d43e284 100644
--- a/sys/dev/ic/cacvar.h
+++ b/sys/dev/ic/cacvar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cacvar.h,v 1.6 2011/04/21 23:10:08 krw Exp $	*/
+/*	$OpenBSD: cacvar.h,v 1.7 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: cacvar.h,v 1.7 2000/10/19 14:28:47 ad Exp $	*/
 
 /*-
@@ -122,6 +122,7 @@ typedef	int cac_lock_t;
 
 int	cac_init(struct cac_softc *, int);
 int	cac_intr(void *);
+int	cac_flush(struct cac_softc *);
 
 extern const struct	cac_linkage cac_l0;
 
diff --git a/sys/dev/ic/ciss.c b/sys/dev/ic/ciss.c
index 7a0e6ce660a..c9a4fa1a1f4 100644
--- a/sys/dev/ic/ciss.c
+++ b/sys/dev/ic/ciss.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ciss.c,v 1.67 2011/11/10 12:05:11 krw Exp $	*/
+/*	$OpenBSD: ciss.c,v 1.68 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005,2006 Michael Shalayeff
@@ -81,7 +81,6 @@ int	ciss_ioctl(struct device *, u_long, caddr_t);
 #endif
 int	ciss_sync(struct ciss_softc *sc);
 void	ciss_heartbeat(void *v);
-void	ciss_shutdown(void *v);
 #ifndef SMALL_KERNEL
 void	ciss_sensors(void *);
 #endif
@@ -356,12 +355,6 @@ ciss_attach(struct ciss_softc *sc)
 	}
 
 	sc->sc_flush = CISS_FLUSH_ENABLE;
-	if (!(sc->sc_sh = shutdownhook_establish(ciss_shutdown, sc))) {
-		printf(": unable to establish shutdown hook\n");
-		bus_dmamem_free(sc->dmat, sc->cmdseg, 1);
-		bus_dmamap_destroy(sc->dmat, sc->cmdmap);
-		return -1;
-	}
 
 	sc->sc_link.adapter_softc = sc;
 	sc->sc_link.openings = sc->maxcmd;
diff --git a/sys/dev/ic/cissvar.h b/sys/dev/ic/cissvar.h
index c6fba9d86aa..95fb6f19668 100644
--- a/sys/dev/ic/cissvar.h
+++ b/sys/dev/ic/cissvar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cissvar.h,v 1.14 2010/06/03 01:03:55 dlg Exp $	*/
+/*	$OpenBSD: cissvar.h,v 1.15 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005,2006 Michael Shalayeff
@@ -31,7 +31,6 @@ struct ciss_softc {
 	struct scsi_link sc_link;
 	struct timeout	sc_hb;
 	void		*sc_ih;
-	void		*sc_sh;
 	int		sc_flush;
 	struct ksensor	*sensors;
 	struct ksensordev sensordev;
@@ -68,3 +67,4 @@ typedef	int ciss_lock_t;
 
 int	ciss_attach(struct ciss_softc *sc);
 int	ciss_intr(void *v);
+void	ciss_shutdown(void *v);
diff --git a/sys/dev/ic/dpt.c b/sys/dev/ic/dpt.c
index 5f212a4dad6..feaddcf2494 100644
--- a/sys/dev/ic/dpt.c
+++ b/sys/dev/ic/dpt.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dpt.c,v 1.33 2011/06/21 20:23:49 matthew Exp $	*/
+/*	$OpenBSD: dpt.c,v 1.34 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: dpt.c,v 1.12 1999/10/23 16:26:33 ad Exp $	*/
 
 /*-
@@ -316,9 +316,6 @@ dpt_init(sc, intrstr)
 		sc->sc_nccbs = i;
 	}
 
-	/* Set shutdownhook before we start any device activity */
-	sc->sc_sdh = shutdownhook_establish(dpt_shutdown, sc);
-
 	/* Get the page 0 inquiry data from the HBA */
 	dpt_hba_inquire(sc, &ei);
 
@@ -384,20 +381,16 @@ dpt_init(sc, intrstr)
 }
 
 /*
- * Our 'shutdownhook' to cleanly shut down the HBA. The HBA must flush 
+ * Cleanly shut down the HBA. The HBA must flush 
  * all data from its cache and mark array groups as clean.
  */
 void
-dpt_shutdown(xxx_sc)
-	void *xxx_sc;
+dpt_shutdown(void *v)
 {
-	struct dpt_softc *sc;
+	struct dpt_softc *sc = v;
 
-	sc = xxx_sc;
-	printf("shutting down %s...", sc->sc_dv.dv_xname);
 	dpt_cmd(sc, NULL, 0, CP_IMMEDIATE, CPI_POWEROFF_WARN);
 	DELAY(5000*1000);
-	printf(" done\n");
 }
 
 /*
diff --git a/sys/dev/ic/dptvar.h b/sys/dev/ic/dptvar.h
index 6731633e6f6..75cc60a94be 100644
--- a/sys/dev/ic/dptvar.h
+++ b/sys/dev/ic/dptvar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dptvar.h,v 1.10 2011/06/21 20:23:49 matthew Exp $	*/
+/*	$OpenBSD: dptvar.h,v 1.11 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: dptvar.h,v 1.5 1999/10/23 16:26:32 ad Exp $	*/
 
 /*
@@ -69,7 +69,6 @@ struct dpt_softc {
 	bus_dma_tag_t	sc_dmat;	/* bus DMA tag */
 	bus_dmamap_t	sc_dmamap_ccb;	/* maps the CCBs */
 	void	 	*sc_ih;		/* interrupt handler cookie */
-	void		*sc_sdh;	/* shutdown hook */
 	struct dpt_ccb	*sc_ccbs;	/* all our CCBs */
 	struct eata_sp	*sc_statpack;	/* EATA status packet */
 	int		sc_spoff;	/* status packet offset in dmamap */
diff --git a/sys/dev/isa/fd.c b/sys/dev/isa/fd.c
index 0d02c79a1f4..f7e8830537c 100644
--- a/sys/dev/isa/fd.c
+++ b/sys/dev/isa/fd.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fd.c,v 1.92 2011/07/04 05:41:48 matthew Exp $	*/
+/*	$OpenBSD: fd.c,v 1.93 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: fd.c,v 1.90 1996/05/12 23:12:03 mycroft Exp $	*/
 
 /*-
@@ -117,8 +117,6 @@ struct fd_softc {
 #define	FD_MOTOR_WAIT	0x04		/* motor coming up */
 	int sc_cylin;		/* where we think the head is */
 
-	void *sc_sdhook;	/* saved shutdown hook for drive. */
-
 	TAILQ_ENTRY(fd_softc) sc_drivechain;
 	int sc_ops;		/* I/O ops since last switch */
 	struct buf sc_q;	/* head of buf chain */
@@ -130,9 +128,10 @@ struct fd_softc {
 /* floppy driver configuration */
 int fdprobe(struct device *, void *, void *);
 void fdattach(struct device *, struct device *, void *);
+int fdactivate(struct device *, int);
 
 struct cfattach fd_ca = {
-	sizeof(struct fd_softc), fdprobe, fdattach
+	sizeof(struct fd_softc), fdprobe, fdattach, NULL, fdactivate
 };
 
 struct cfdriver fd_cd = {
@@ -302,15 +301,26 @@ fdattach(struct device *parent, struct device *self, void *aux)
 	fd->sc_dk.dk_name = fd->sc_dev.dv_xname;
 	disk_attach(&fd->sc_dev, &fd->sc_dk);
 
-	/* Needed to power off if the motor is on when we halt. */
-	fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd);
-
 	/* Setup timeout structures */
 	timeout_set(&fd->fd_motor_on_to, fd_motor_on, fd);
 	timeout_set(&fd->fd_motor_off_to, fd_motor_off, fd);
 	timeout_set(&fd->fdtimeout_to, fdtimeout, fd);
 }
 
+int
+fdactivate(struct device *self, int act)
+{
+	int rv = 0;
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		fd_motor_off(self);
+		break;
+	}
+
+	return (rv);
+}
+
 /*
  * Translate nvram type into internal data structure.  Return NULL for
  * none/unknown/unusable.
diff --git a/sys/dev/isa/isa.c b/sys/dev/isa/isa.c
index 408e9f179dd..f817620e328 100644
--- a/sys/dev/isa/isa.c
+++ b/sys/dev/isa/isa.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: isa.c,v 1.40 2010/07/08 20:18:32 deraadt Exp $	*/
+/*	$OpenBSD: isa.c,v 1.41 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: isa.c,v 1.85 1996/05/14 00:31:04 thorpej Exp $	*/
 
 /*
@@ -75,8 +75,7 @@ void isaattach(struct device *, struct device *, void *);
 extern int autoconf_verbose;
 
 struct cfattach isa_ca = {
-	sizeof(struct isa_softc), isamatch, isaattach, NULL,
-	config_activate_children
+	sizeof(struct isa_softc), isamatch, isaattach
 };
 
 struct cfdriver isa_cd = {
diff --git a/sys/dev/pci/ahd_pci.c b/sys/dev/pci/ahd_pci.c
index 6c89c339181..89dba9301bc 100644
--- a/sys/dev/pci/ahd_pci.c
+++ b/sys/dev/pci/ahd_pci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ahd_pci.c,v 1.21 2012/12/05 23:20:19 deraadt Exp $	*/
+/*	$OpenBSD: ahd_pci.c,v 1.22 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2004 Milos Urbanek, Kenneth R. Westerback & Marco Peereboom
@@ -283,9 +283,11 @@ static const char *pci_bus_modes[] =
 
 int	ahd_pci_probe(struct device *, void *, void *);
 void	ahd_pci_attach(struct device *, struct device *, void *);
+int	ahd_activate(struct device *, int);
 
 struct cfattach ahd_pci_ca = {
-	        sizeof(struct ahd_softc), ahd_pci_probe, ahd_pci_attach
+        sizeof(struct ahd_softc), ahd_pci_probe, ahd_pci_attach,
+	NULL, ahd_activate
 };
 
 int	ahd_check_extport(struct ahd_softc *ahd);
@@ -540,6 +542,22 @@ ahd_pci_attach(struct device *parent, struct device *self, void *aux)
 	ahd_attach(ahd);
 }
 
+int
+ahd_activate(struct device *self, int act)
+{
+	int ret = 0;
+
+	ret = config_activate_children(self, act);
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		ahd_shutdown(self);
+		break;
+	}
+
+	return (ret);
+}
+
 /*
  * Perform some simple tests that should catch situations where
  * our registers are invalidly mapped.
diff --git a/sys/dev/pci/amdpm.c b/sys/dev/pci/amdpm.c
index 81063f43fc0..6fea65c5247 100644
--- a/sys/dev/pci/amdpm.c
+++ b/sys/dev/pci/amdpm.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: amdpm.c,v 1.28 2012/10/05 10:51:28 haesbaert Exp $	*/
+/*	$OpenBSD: amdpm.c,v 1.29 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
@@ -185,8 +185,8 @@ int	amdpm_i2c_exec(void *, i2c_op_t, i2c_addr_t, const void *, size_t,
 int	amdpm_intr(void *);
 
 struct cfattach amdpm_ca = {
-	sizeof(struct amdpm_softc), amdpm_match, amdpm_attach, NULL,
-	amdpm_activate
+	sizeof(struct amdpm_softc), amdpm_match, amdpm_attach,
+	NULL, amdpm_activate
 };
 
 struct cfdriver amdpm_cd = {
@@ -312,8 +312,15 @@ int
 amdpm_activate(struct device *self, int act)
 {
 	struct amdpm_softc *sc = (struct amdpm_softc *)self;
+	int ret = 0;
 
 	switch (act) {
+	case DVACT_QUIESCE:
+		ret = config_activate_children(self, act);
+		break;
+	case DVACT_SUSPEND:
+		ret = config_activate_children(self, act);
+		break;
 	case DVACT_RESUME:
 		if (timeout_initialized(&sc->sc_rnd_ch)) {
 			pcireg_t cfg_reg;
@@ -325,9 +332,13 @@ amdpm_activate(struct device *self, int act)
 			    AMDPM_CONFREG, cfg_reg | AMDPM_RNGEN);
 		
 		}
+		ret = config_activate_children(self, act);
+		break;
+	case DVACT_POWERDOWN:
+		ret = config_activate_children(self, act);
 		break;
 	}
-	return (0);
+	return (ret);
 }
 
 void
diff --git a/sys/dev/pci/arc.c b/sys/dev/pci/arc.c
index 67f55c1c8f7..639c6a425cb 100644
--- a/sys/dev/pci/arc.c
+++ b/sys/dev/pci/arc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc.c,v 1.95 2011/07/17 22:46:48 matthew Exp $ */
+/*	$OpenBSD: arc.c,v 1.96 2013/05/30 16:15:02 deraadt Exp $ */
 
 /*
  * Copyright (c) 2006 David Gwynne <dlg@openbsd.org>
@@ -347,7 +347,7 @@ struct arc_fw_sysinfo {
 int			arc_match(struct device *, void *, void *);
 void			arc_attach(struct device *, struct device *, void *);
 int			arc_detach(struct device *, int);
-void			arc_shutdown(void *);
+int			arc_activate(struct device *, int);
 int			arc_intr(void *);
 
 struct arc_iop;
@@ -369,8 +369,6 @@ struct arc_softc {
 
 	void			*sc_ih;
 
-	void			*sc_shutdownhook;
-
 	int			sc_req_count;
 
 	struct arc_dmamem	*sc_requests;
@@ -393,7 +391,8 @@ struct arc_softc {
 #define DEVNAME(_s)		((_s)->sc_dev.dv_xname)
 
 struct cfattach arc_ca = {
-	sizeof(struct arc_softc), arc_match, arc_attach, arc_detach
+	sizeof(struct arc_softc), arc_match, arc_attach, arc_detach,
+	arc_activate
 };
 
 struct cfdriver arc_cd = {
@@ -590,10 +589,6 @@ arc_attach(struct device *parent, struct device *self, void *aux)
 		goto unmap_pci;
 	}
 
-	sc->sc_shutdownhook = shutdownhook_establish(arc_shutdown, sc);
-	if (sc->sc_shutdownhook == NULL)
-		panic("unable to establish arc shutdownhook");
-
 	sc->sc_link.adapter = &arc_switch;
 	sc->sc_link.adapter_softc = sc;
 	sc->sc_link.adapter_target = ARC_MAX_TARGET;
@@ -633,31 +628,40 @@ unmap_pci:
 }
 
 int
-arc_detach(struct device *self, int flags)
+arc_activate(struct device *self, int act)
 {
-	struct arc_softc		*sc = (struct arc_softc *)self;
-
-	shutdownhook_disestablish(sc->sc_shutdownhook);
-
-	if (arc_msg0(sc, ARC_RA_INB_MSG0_STOP_BGRB) != 0)
-		printf("%s: timeout waiting to stop bg rebuild\n", DEVNAME(sc));
-
-	if (arc_msg0(sc, ARC_RA_INB_MSG0_FLUSH_CACHE) != 0)
-		printf("%s: timeout waiting to flush cache\n", DEVNAME(sc));
+	int ret = 0;
 
-	return (0);
+	switch (act) {
+	case DVACT_QUIESCE:
+		ret = config_activate_children(self, act);
+		break;
+	case DVACT_SUSPEND:
+		ret = config_activate_children(self, act);
+		break;
+	case DVACT_POWERDOWN:
+		ret = config_activate_children(self, act);
+		arc_detach(self, 0);
+		break;
+	case DVACT_RESUME:
+		ret = config_activate_children(self, act);
+		break;
+	}
+	return (ret);	
 }
 
-void
-arc_shutdown(void *xsc)
+int
+arc_detach(struct device *self, int flags)
 {
-	struct arc_softc		*sc = xsc;
+	struct arc_softc		*sc = (struct arc_softc *)self;
 
 	if (arc_msg0(sc, ARC_RA_INB_MSG0_STOP_BGRB) != 0)
 		printf("%s: timeout waiting to stop bg rebuild\n", DEVNAME(sc));
 
 	if (arc_msg0(sc, ARC_RA_INB_MSG0_FLUSH_CACHE) != 0)
 		printf("%s: timeout waiting to flush cache\n", DEVNAME(sc));
+
+	return (0);
 }
 
 int
diff --git a/sys/dev/pci/azalia.c b/sys/dev/pci/azalia.c
index a9668679380..5cfc8eb80a1 100644
--- a/sys/dev/pci/azalia.c
+++ b/sys/dev/pci/azalia.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: azalia.c,v 1.205 2013/05/24 07:58:46 ratchov Exp $	*/
+/*	$OpenBSD: azalia.c,v 1.206 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: azalia.c,v 1.20 2006/05/07 08:31:44 kent Exp $	*/
 
 /*-
@@ -550,8 +550,6 @@ azalia_pci_attach(struct device *parent, struct device *self, void *aux)
 
 	sc->audiodev = audio_attach_mi(&azalia_hw_if, sc, &sc->dev);
 
-	shutdownhook_establish(azalia_shutdown, sc);
-
 	return;
 
 err_exit:
@@ -572,6 +570,9 @@ azalia_pci_activate(struct device *self, int act)
 	case DVACT_SUSPEND:
 		azalia_suspend(sc);
 		break;
+	case DVACT_POWERDOWN:
+		azalia_shutdown(sc);
+		break;
 	case DVACT_RESUME:
 		azalia_resume(sc);
 		rv = config_activate_children(self, act);
diff --git a/sys/dev/pci/cac_pci.c b/sys/dev/pci/cac_pci.c
index 4304deabca2..144cfe5a888 100644
--- a/sys/dev/pci/cac_pci.c
+++ b/sys/dev/pci/cac_pci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cac_pci.c,v 1.13 2009/04/06 15:18:45 kettenis Exp $	*/
+/*	$OpenBSD: cac_pci.c,v 1.14 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: cac_pci.c,v 1.10 2001/01/10 16:48:04 ad Exp $	*/
 
 /*-
@@ -56,6 +56,7 @@
 void	cac_pci_attach(struct device *, struct device *, void *);
 const struct	cac_pci_type *cac_pci_findtype(struct pci_attach_args *);
 int	cac_pci_match(struct device *, void *, void *);
+int	cac_activate(struct device *, int);
 
 struct	cac_ccb *cac_pci_l0_completed(struct cac_softc *);
 int	cac_pci_l0_fifo_full(struct cac_softc *);
@@ -233,6 +234,24 @@ cac_pci_attach(parent, self, aux)
 	cac_init(sc, (ct->ct_flags & CT_STARTFW) != 0);
 }
 
+int
+cac_activate(struct device *self, int act)
+{
+	struct cac_softc *sc = (struct cac_softc *)self;
+	int ret = 0;
+
+	ret = config_activate_children(self, act);
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		cac_flush(sc);
+		break;
+	}
+
+	return (ret);
+}
+
+
 void
 cac_pci_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
 {
diff --git a/sys/dev/pci/ciss_pci.c b/sys/dev/pci/ciss_pci.c
index cd452b77d8e..3c6d58c0324 100644
--- a/sys/dev/pci/ciss_pci.c
+++ b/sys/dev/pci/ciss_pci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ciss_pci.c,v 1.16 2012/03/11 13:33:06 jsg Exp $	*/
+/*	$OpenBSD: ciss_pci.c,v 1.17 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -39,9 +39,11 @@
 
 int	ciss_pci_match(struct device *, void *, void *);
 void	ciss_pci_attach(struct device *, struct device *, void *);
+int	ciss_activate(struct device *, int);
 
 struct cfattach ciss_pci_ca = {
-	sizeof(struct ciss_softc), ciss_pci_match, ciss_pci_attach
+	sizeof(struct ciss_softc), ciss_pci_match, ciss_pci_attach,
+	NULL, ciss_activate
 };
 
 const struct pci_matchid ciss_pci_devices[] = {
@@ -192,3 +194,19 @@ ciss_pci_attach(struct device *parent, struct device *self, void *aux)
 	bus_space_write_4(sc->iot, sc->ioh, CISS_IMR,
 	    bus_space_read_4(sc->iot, sc->ioh, CISS_IMR) & ~sc->iem);
 }
+
+int
+ciss_activate(struct device *self, int act)
+{
+	int ret = 0;
+
+	ret = config_activate_children(self, act);
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		ciss_shutdown(self);
+		break;
+	}
+
+	return (ret);
+}
diff --git a/sys/dev/pci/dpt_pci.c b/sys/dev/pci/dpt_pci.c
index b1bb1666f89..6434a29a9f7 100644
--- a/sys/dev/pci/dpt_pci.c
+++ b/sys/dev/pci/dpt_pci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dpt_pci.c,v 1.6 2008/05/13 02:24:08 brad Exp $	*/
+/*	$OpenBSD: dpt_pci.c,v 1.7 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: dpt_pci.c,v 1.2 1999/09/29 17:33:02 ad Exp $	*/
 
 /*
@@ -68,9 +68,11 @@ int	dpt_pci_match(struct device *, struct cfdata *, void *);
 int	dpt_pci_match(struct device *, void *, void *);
 #endif /* __OpenBSD__ */
 void	dpt_pci_attach(struct device *, struct device *, void *);
+int	dpt_activate(struct device *, int);
 
 struct cfattach dpt_pci_ca = {
-	sizeof(struct dpt_softc), dpt_pci_match, dpt_pci_attach
+	sizeof(struct dpt_softc), dpt_pci_match, dpt_pci_attach, NULL,
+	dpt_activate
 };
 
 int
@@ -149,3 +151,27 @@ dpt_pci_attach(parent, self, aux)
 	/* Now attach to the bus-independant code */
 	dpt_init(sc, intrstr);
 }
+
+int
+dpt_activate(struct device *self, int act)
+{
+	int ret = 0;
+
+	switch (act) {
+	case DVACT_QUIESCE:
+		ret = config_activate_children(self, act);
+		break;
+	case DVACT_SUSPEND:
+		ret = config_activate_children(self, act);
+		break;
+	case DVACT_POWERDOWN:
+		ret = config_activate_children(self, act);
+		dpt_shutdown(self);
+		break;
+	case DVACT_RESUME:
+		ret = config_activate_children(self, act);
+		break;
+	}
+
+	return (ret);
+}
diff --git a/sys/dev/pci/iop_pci.c b/sys/dev/pci/iop_pci.c
index f0b70f06fbf..a92ca464b87 100644
--- a/sys/dev/pci/iop_pci.c
+++ b/sys/dev/pci/iop_pci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: iop_pci.c,v 1.8 2010/07/13 13:07:35 kettenis Exp $	*/
+/*	$OpenBSD: iop_pci.c,v 1.9 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: iop_pci.c,v 1.4 2001/03/20 13:21:00 ad Exp $	*/
 
 /*-
@@ -56,9 +56,11 @@
 
 void	iop_pci_attach(struct device *, struct device *, void *);
 int	iop_pci_match(struct device *, void *, void *);
+int	iop_activate(struct device *, int);
 
 struct cfattach iop_pci_ca = {
-	sizeof(struct iop_softc), iop_pci_match, iop_pci_attach
+	sizeof(struct iop_softc), iop_pci_match, iop_pci_attach,
+	NULL, iop_activate
 };
 
 int
@@ -143,3 +145,27 @@ iop_pci_attach(struct device *parent, struct device *self, void *aux)
 	/* Attach to the bus-independent code. */
 	iop_init(sc, intrstr);
 }
+
+int
+iop_activate(struct device *self, int act)
+{
+	int ret = 0;
+
+	switch (act) {
+	case DVACT_QUIESCE:
+		ret = config_activate_children(self, act);
+		break;
+	case DVACT_SUSPEND:
+		ret = config_activate_children(self, act);
+		break;
+	case DVACT_POWERDOWN:
+		ret = config_activate_children(self, act);
+		iop_shutdown(self);
+		break;
+	case DVACT_RESUME:
+		ret = config_activate_children(self, act);
+		break;
+	}
+
+	return (ret);
+}
diff --git a/sys/dev/pci/puc.c b/sys/dev/pci/puc.c
index f52c0dabe31..ab845fb8562 100644
--- a/sys/dev/pci/puc.c
+++ b/sys/dev/pci/puc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: puc.c,v 1.22 2012/06/12 18:43:26 kettenis Exp $	*/
+/*	$OpenBSD: puc.c,v 1.23 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: puc.c,v 1.3 1999/02/06 06:29:54 cgd Exp $	*/
 
 /*
@@ -83,7 +83,7 @@ void	*puc_pci_intr_establish(struct puc_attach_args *, int,
 
 struct cfattach puc_pci_ca = {
 	sizeof(struct puc_pci_softc), puc_pci_match,
-	puc_pci_attach, puc_pci_detach, config_activate_children
+	puc_pci_attach, puc_pci_detach
 };
 
 struct cfdriver puc_cd = {
diff --git a/sys/dev/pci/tcpcib.c b/sys/dev/pci/tcpcib.c
index 3f8386c78db..0b6f93d56a3 100644
--- a/sys/dev/pci/tcpcib.c
+++ b/sys/dev/pci/tcpcib.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tcpcib.c,v 1.4 2012/10/17 22:32:01 deraadt Exp $	*/
+/*	$OpenBSD: tcpcib.c,v 1.5 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2012 Matt Dainty <matt@bodgit-n-scarper.com>
@@ -269,9 +269,11 @@ int
 tcpcib_activate(struct device *self, int act)
 {
 	struct tcpcib_softc *sc = (struct tcpcib_softc *)self;
-
+	int ret = 0;
+	
 	switch (act) {
 	case DVACT_SUSPEND:
+		ret = config_activate_children(self, act);
 		/* Watchdog is running, disable it */
 		if (sc->sc_active & E600_WDT_ACTIVE && sc->sc_wdt_period != 0)
 			tcpcib_wdt_stop(sc);
@@ -291,9 +293,13 @@ tcpcib_activate(struct device *self, int act)
 		if (sc->sc_active & E600_HPET_ACTIVE)
 			bus_space_write_4(sc->sc_hpet_iot, sc->sc_hpet_ioh,
 			    E600_HPET_GC, E600_HPET_GC_ENABLE);
+		ret = config_activate_children(self, act);
+		break;
+	default:
+		ret = config_activate_children(self, act);
 		break;
 	}
-	return (0);
+	return (ret);
 }
 
 int
diff --git a/sys/dev/pcmcia/cfxga.c b/sys/dev/pcmcia/cfxga.c
index acf73b5bc95..952ae0fec38 100644
--- a/sys/dev/pcmcia/cfxga.c
+++ b/sys/dev/pcmcia/cfxga.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cfxga.c,v 1.21 2011/07/03 15:47:17 matthew Exp $	*/
+/*	$OpenBSD: cfxga.c,v 1.22 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005, 2006, Matthieu Herrb and Miodrag Vallat
@@ -316,13 +316,16 @@ int
 cfxga_activate(struct device *dev, int act)
 {
 	struct cfxga_softc *sc = (void *)dev;
+	int ret = 0;
 
 	switch (act) {
 	case DVACT_DEACTIVATE:
 		pcmcia_function_disable(sc->sc_pf);
 		break;
+	case DVACT_POWERDOWN:
+		ret = config_activate_children(self, act);
 	}
-	return (0);
+	return (ret);
 }
 
 void 
diff --git a/sys/dev/usb/ehci.c b/sys/dev/usb/ehci.c
index 57f30ca7506..948be507f4a 100644
--- a/sys/dev/usb/ehci.c
+++ b/sys/dev/usb/ehci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ehci.c,v 1.132 2013/05/20 08:19:47 yasuoka Exp $ */
+/*	$OpenBSD: ehci.c,v 1.133 2013/05/30 16:15:02 deraadt Exp $ */
 /*	$NetBSD: ehci.c,v 1.66 2004/06/30 03:11:56 mycroft Exp $	*/
 
 /*
@@ -1053,6 +1053,7 @@ ehci_activate(struct device *self, int act)
 		rv = config_activate_children(self, act);
 		break;
 	case DVACT_SUSPEND:
+		rv = config_activate_children(self, act);
 		sc->sc_bus.use_polling++;
 
 		for (i = 1; i <= sc->sc_noport; i++) {
@@ -1095,6 +1096,7 @@ ehci_activate(struct device *self, int act)
 		sc->sc_bus.use_polling--;
 		break;
 	case DVACT_POWERDOWN:
+		rv = config_activate_children(self, act);
 		ehci_shutdown(sc);
 		break;
 	case DVACT_RESUME:
diff --git a/sys/dev/usb/ohci.c b/sys/dev/usb/ohci.c
index 87770263d74..4b2074cf7a2 100644
--- a/sys/dev/usb/ohci.c
+++ b/sys/dev/usb/ohci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ohci.c,v 1.112 2013/05/20 08:19:47 yasuoka Exp $ */
+/*	$OpenBSD: ohci.c,v 1.113 2013/05/30 16:15:02 deraadt Exp $ */
 /*	$NetBSD: ohci.c,v 1.139 2003/02/22 05:24:16 tsutsui Exp $	*/
 /*	$FreeBSD: src/sys/dev/usb/ohci.c,v 1.22 1999/11/17 22:33:40 n_hibma Exp $	*/
 
@@ -99,7 +99,6 @@ usbd_status	ohci_alloc_std_chain(struct ohci_pipe *,
 			    struct ohci_softc *, u_int, int, struct usbd_xfer *,
 			    struct ohci_soft_td *, struct ohci_soft_td **);
 
-void		ohci_shutdown(void *v);
 usbd_status	ohci_open(struct usbd_pipe *);
 void		ohci_poll(struct usbd_bus *);
 void		ohci_softintr(void *);
@@ -325,6 +324,7 @@ ohci_activate(struct device *self, int act)
 
 	switch (act) {
 	case DVACT_SUSPEND:
+		rv = config_activate_children(self, act);
 		sc->sc_bus.use_polling++;
 		reg = OREAD4(sc, OHCI_CONTROL) & ~OHCI_HCFS_MASK;
 		if (sc->sc_control == 0) {
@@ -342,6 +342,10 @@ ohci_activate(struct device *self, int act)
 		usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT);
 		sc->sc_bus.use_polling--;
 		break;
+	case DVACT_POWERDOWN:
+		rv = config_activate_children(self, act);
+		OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
+		break;
 	case DVACT_RESUME:
 		sc->sc_bus.use_polling++;
 
@@ -377,6 +381,7 @@ ohci_activate(struct device *self, int act)
 		usb_delay_ms(&sc->sc_bus, USB_RESUME_RECOVERY);
 		sc->sc_control = sc->sc_intre = sc->sc_ival = 0;
 		sc->sc_bus.use_polling--;
+		rv = config_activate_children(self, act);
 		break;
 	case DVACT_DEACTIVATE:
 		if (sc->sc_child != NULL)
@@ -400,9 +405,6 @@ ohci_detach(struct ohci_softc *sc, int flags)
 
 	timeout_del(&sc->sc_tmo_rhsc);
 
-	if (sc->sc_shutdownhook != NULL)
-		shutdownhook_disestablish(sc->sc_shutdownhook);
-
 	usb_delay_ms(&sc->sc_bus, 300); /* XXX let stray task complete */
 
 	/* free data structures XXX */
@@ -919,7 +921,6 @@ ohci_init(struct ohci_softc *sc)
 	sc->sc_bus.pipe_size = sizeof(struct ohci_pipe);
 
 	sc->sc_control = sc->sc_intre = 0;
-	sc->sc_shutdownhook = shutdownhook_establish(ohci_shutdown, sc);
 
 	timeout_set(&sc->sc_tmo_rhsc, ohci_rhsc_enable, sc);
 
@@ -986,18 +987,6 @@ ohci_freex(struct usbd_bus *bus, struct usbd_xfer *xfer)
 	SIMPLEQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next);
 }
 
-/*
- * Shut down the controller when the system is going down.
- */
-void
-ohci_shutdown(void *v)
-{
-	struct ohci_softc *sc = v;
-
-	DPRINTF(("ohci_shutdown: stopping the HC\n"));
-	OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
-}
-
 #ifdef OHCI_DEBUG
 void
 ohci_dumpregs(struct ohci_softc *sc)
diff --git a/sys/dev/usb/ohcivar.h b/sys/dev/usb/ohcivar.h
index e1b6123f106..75eed0dc095 100644
--- a/sys/dev/usb/ohcivar.h
+++ b/sys/dev/usb/ohcivar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ohcivar.h,v 1.32 2013/04/15 09:23:01 mglocker Exp $ */
+/*	$OpenBSD: ohcivar.h,v 1.33 2013/05/30 16:15:02 deraadt Exp $ */
 /*	$NetBSD: ohcivar.h,v 1.32 2003/02/22 05:24:17 tsutsui Exp $	*/
 /*	$FreeBSD: src/sys/dev/usb/ohcivar.h,v 1.13 1999/11/17 22:33:41 n_hibma Exp $	*/
 
@@ -116,8 +116,6 @@ struct ohci_softc {
 	char sc_vendor[16];
 	int sc_id_vendor;
 
-	void *sc_shutdownhook;		/* cookie from shutdown hook */
-
 	u_int32_t sc_control;		/* Preserved during suspend/standby */
 	u_int32_t sc_intre;
 	u_int32_t sc_ival;
diff --git a/sys/dev/usb/udl.c b/sys/dev/usb/udl.c
index 8423850539b..b392b804804 100644
--- a/sys/dev/usb/udl.c
+++ b/sys/dev/usb/udl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: udl.c,v 1.75 2013/04/26 14:28:39 mpi Exp $ */
+/*	$OpenBSD: udl.c,v 1.76 2013/05/30 16:15:02 deraadt Exp $ */
 
 /*
  * Copyright (c) 2009 Marcus Glocker <mglocker@openbsd.org>
@@ -486,14 +486,16 @@ int
 udl_activate(struct device *self, int act)
 {
 	struct udl_softc *sc = (struct udl_softc *)self;
+	int ret = 0;
 
 	switch (act) {
 	case DVACT_DEACTIVATE:
 		usbd_deactivate(sc->sc_udev);
 		break;
 	}
+	ret = config_activate_children(self, act);
 
-	return (0);
+	return (ret);
 }
 
 /* ---------- */
diff --git a/sys/dev/usb/uhci.c b/sys/dev/usb/uhci.c
index 487fda3922d..d2168f094ce 100644
--- a/sys/dev/usb/uhci.c
+++ b/sys/dev/usb/uhci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uhci.c,v 1.97 2013/05/20 08:19:47 yasuoka Exp $	*/
+/*	$OpenBSD: uhci.c,v 1.98 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: uhci.c,v 1.172 2003/02/23 04:19:26 simonb Exp $	*/
 /*	$FreeBSD: src/sys/dev/usb/uhci.c,v 1.33 1999/11/17 22:33:41 n_hibma Exp $	*/
 
@@ -127,7 +127,6 @@ struct uhci_pipe {
 void		uhci_globalreset(struct uhci_softc *);
 usbd_status	uhci_portreset(struct uhci_softc *, int);
 void		uhci_reset(struct uhci_softc *);
-void		uhci_shutdown(void *v);
 usbd_status	uhci_run(struct uhci_softc *, int run);
 struct uhci_soft_td *uhci_alloc_std(struct uhci_softc *);
 void		uhci_free_std(struct uhci_softc *, struct uhci_soft_td *);
@@ -502,7 +501,6 @@ uhci_init(struct uhci_softc *sc)
 	sc->sc_bus.pipe_size = sizeof(struct uhci_pipe);
 
 	sc->sc_suspend = DVACT_RESUME;
-	sc->sc_shutdownhook = shutdownhook_establish(uhci_shutdown, sc);
 
 	UHCICMD(sc, UHCI_CMD_MAXP); /* Assume 64 byte packets at frame end */
 
@@ -525,6 +523,7 @@ uhci_activate(struct device *self, int act)
 		if (uhcidebug > 2)
 			uhci_dumpregs(sc);
 #endif
+		rv = config_activate_children(self, act);
 		if (sc->sc_intr_xfer != NULL)
 			timeout_del(&sc->sc_poll_handle);
 		sc->sc_bus.use_polling++;
@@ -542,6 +541,10 @@ uhci_activate(struct device *self, int act)
 		sc->sc_bus.use_polling--;
 		DPRINTF(("uhci_activate: cmd=0x%x\n", UREAD2(sc, UHCI_CMD)));
 		break;
+	case DVACT_POWERDOWN:
+		rv = config_activate_children(self, act);
+		uhci_run(sc, 0); /* stop the controller */
+		break;
 	case DVACT_RESUME:
 #ifdef DIAGNOSTIC
 		if (sc->sc_suspend == DVACT_RESUME)
@@ -577,6 +580,7 @@ uhci_activate(struct device *self, int act)
 		if (uhcidebug > 2)
 			uhci_dumpregs(sc);
 #endif
+		rv = config_activate_children(self, act);
 		break;
 	case DVACT_DEACTIVATE:
 		if (sc->sc_child != NULL)
@@ -598,9 +602,6 @@ uhci_detach(struct uhci_softc *sc, int flags)
 	if (rv != 0)
 		return (rv);
 
-	if (sc->sc_shutdownhook != NULL)
-		shutdownhook_disestablish(sc->sc_shutdownhook);
-
 	if (sc->sc_intr_xfer != NULL) {
 		timeout_del(&sc->sc_poll_handle);
 		sc->sc_intr_xfer = NULL;
@@ -669,18 +670,6 @@ uhci_freex(struct usbd_bus *bus, struct usbd_xfer *xfer)
 	SIMPLEQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next);
 }
 
-/*
- * Shut down the controller when the system is going down.
- */
-void
-uhci_shutdown(void *v)
-{
-	struct uhci_softc *sc = v;
-
-	DPRINTF(("uhci_shutdown: stopping the HC\n"));
-	uhci_run(sc, 0); /* stop the controller */
-}
-
 #ifdef UHCI_DEBUG
 void
 uhci_dumpregs(struct uhci_softc *sc)
diff --git a/sys/dev/usb/uhcivar.h b/sys/dev/usb/uhcivar.h
index 09e71b715c5..9205b58d639 100644
--- a/sys/dev/usb/uhcivar.h
+++ b/sys/dev/usb/uhcivar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uhcivar.h,v 1.25 2013/04/15 09:23:02 mglocker Exp $ */
+/*	$OpenBSD: uhcivar.h,v 1.26 2013/05/30 16:15:02 deraadt Exp $ */
 /*	$NetBSD: uhcivar.h,v 1.36 2002/12/31 00:39:11 augustss Exp $	*/
 /*	$FreeBSD: src/sys/dev/usb/uhcivar.h,v 1.14 1999/11/17 22:33:42 n_hibma Exp $	*/
 
@@ -170,8 +170,6 @@ struct uhci_softc {
 	char sc_vendor[32];		/* vendor string for root hub */
 	int sc_id_vendor;		/* vendor ID for root hub */
 
-	void *sc_shutdownhook;		/* cookie from shutdown hook */
-
 	struct device *sc_child;		/* /dev/usb# device */
 };
 
diff --git a/sys/dev/usb/umass.c b/sys/dev/usb/umass.c
index a25fc2aa44a..1502bb2cbb7 100644
--- a/sys/dev/usb/umass.c
+++ b/sys/dev/usb/umass.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: umass.c,v 1.63 2013/04/15 09:23:02 mglocker Exp $ */
+/*	$OpenBSD: umass.c,v 1.64 2013/05/30 16:15:02 deraadt Exp $ */
 /*	$NetBSD: umass.c,v 1.116 2004/06/30 05:53:46 mycroft Exp $	*/
 
 /*
@@ -687,6 +687,9 @@ umass_activate(struct device *dev, int act)
 		DPRINTF(UDMASS_USB, ("%s: umass_activate: child "
 		    "returned %d\n", sc->sc_dev.dv_xname, rv));
 		break;
+	default:
+		rv = config_activate_children(dev, act);
+		break;
 	}
 	return (rv);
 }
diff --git a/sys/dev/usb/usb.c b/sys/dev/usb/usb.c
index 2054f207820..affda3e7c36 100644
--- a/sys/dev/usb/usb.c
+++ b/sys/dev/usb/usb.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: usb.c,v 1.91 2013/05/17 09:09:11 mpi Exp $	*/
+/*	$OpenBSD: usb.c,v 1.92 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: usb.c,v 1.77 2003/01/01 00:10:26 thorpej Exp $	*/
 
 /*
@@ -881,6 +881,13 @@ usb_activate(struct device *self, int act)
 			}
 		}
 		break;
+	case DVACT_QUIESCE:
+		rv = config_activate_children(self, act);
+		break;
+	case DVACT_SUSPEND:
+		break;
+	case DVACT_POWERDOWN:
+		break;
 	case DVACT_RESUME:
 		usb_needs_explore(sc->sc_bus->root_hub, 0);
 		break;
diff --git a/sys/dev/wscons/wsdisplay.c b/sys/dev/wscons/wsdisplay.c
index 49e91859a9e..00b1475fe2e 100644
--- a/sys/dev/wscons/wsdisplay.c
+++ b/sys/dev/wscons/wsdisplay.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: wsdisplay.c,v 1.108 2013/05/12 20:41:45 kettenis Exp $ */
+/* $OpenBSD: wsdisplay.c,v 1.109 2013/05/30 16:15:02 deraadt Exp $ */
 /* $NetBSD: wsdisplay.c,v 1.82 2005/02/27 00:27:52 perry Exp $ */
 
 /*
@@ -156,7 +156,6 @@ int	wsdisplay_getscreen(struct wsdisplay_softc *,
 	    struct wsdisplay_addscreendata *);
 void	wsdisplay_resume_device(struct device *);
 void	wsdisplay_suspend_device(struct device *);
-void	wsdisplay_shutdownhook(void *);
 void	wsdisplay_addscreen_print(struct wsdisplay_softc *, int, int);
 void	wsdisplay_closescreen(struct wsdisplay_softc *, struct wsscreen *);
 int	wsdisplay_delscreen(struct wsdisplay_softc *, int, int);
@@ -216,13 +215,15 @@ int	wsdisplay_emul_match(struct device *, void *, void *);
 void	wsdisplay_emul_attach(struct device *, struct device *, void *);
 int	wsdisplay_emul_detach(struct device *, int);
 
+int	wsdisplay_activate(struct device *, int);
+
 struct cfdriver wsdisplay_cd = {
 	NULL, "wsdisplay", DV_TTY
 };
 
 struct cfattach wsdisplay_emul_ca = {
 	sizeof(struct wsdisplay_softc), wsdisplay_emul_match,
-	    wsdisplay_emul_attach, wsdisplay_emul_detach
+	wsdisplay_emul_attach, wsdisplay_emul_detach, wsdisplay_activate
 };
 
 void	wsdisplaystart(struct tty *);
@@ -585,6 +586,20 @@ wsdisplay_emul_detach(struct device *self, int flags)
 }
 
 int
+wsdisplay_activate(struct device *self, int act)
+{
+	int ret = 0;
+
+	switch (act) {
+	case DVACT_POWERDOWN:
+		wsdisplay_switchtoconsole();
+		break;
+	}
+
+	return (ret);
+}
+
+int
 wsdisplay_common_detach(struct wsdisplay_softc *sc, int flags)
 {
 	int i;
@@ -659,7 +674,6 @@ wsdisplay_common_attach(struct wsdisplay_softc *sc, int console, int kbdmux,
     const struct wsdisplay_accessops *accessops, void *accesscookie,
     u_int defaultscreens)
 {
-	static int hookset = 0;
 	int i, start = 0;
 #if NWSKBD > 0
 	struct wsevsrc *kme;
@@ -754,10 +768,6 @@ wsdisplay_common_attach(struct wsdisplay_softc *sc, int console, int kbdmux,
 	wsdisplay_burn(sc, sc->sc_burnflags);
 #endif
 
-	if (hookset == 0)
-		shutdownhook_establish(wsdisplay_shutdownhook, NULL);
-	hookset = 1;
-
 #if NWSKBD > 0 && NWSMUX == 0
 	if (console == 0) {
 		/*
@@ -2353,15 +2363,6 @@ wsdisplay_burner(void *v)
 }
 #endif
 
-/*
- * Switch the console at shutdown.
- */
-void
-wsdisplay_shutdownhook(void *arg)
-{
-	wsdisplay_switchtoconsole();
-}
-
 #ifdef WSMOUSED_SUPPORT
 /*
  * wsmoused(8) support functions
diff --git a/sys/kern/subr_autoconf.c b/sys/kern/subr_autoconf.c
index ff5c4313db9..36eab78eb60 100644
--- a/sys/kern/subr_autoconf.c
+++ b/sys/kern/subr_autoconf.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: subr_autoconf.c,v 1.67 2012/10/08 21:47:50 deraadt Exp $	*/
+/*	$OpenBSD: subr_autoconf.c,v 1.68 2013/05/30 16:15:02 deraadt Exp $	*/
 /*	$NetBSD: subr_autoconf.c,v 1.21 1996/04/04 06:06:18 cgd Exp $	*/
 
 /*
@@ -774,13 +774,10 @@ config_suspend(struct device *dev, int act)
 {
 	struct cfattach *ca = dev->dv_cfdata->cf_attach;
 
-	if (ca->ca_activate) {
-#if 0
-		printf("activate: %s %d\n", dev->dv_xname, act);
-#endif
+	if (ca->ca_activate)
 		return (*ca->ca_activate)(dev, act);
-	}
-	return (0);
+	else
+		return config_activate_children(dev, act);
 }
 
 /*