diff --git a/sys/arch/hpcmips/vr/vrc4172gpio.c b/sys/arch/hpcmips/vr/vrc4172gpio.c
index c4856d21fad5..33853b5b7f52 100644
--- a/sys/arch/hpcmips/vr/vrc4172gpio.c
+++ b/sys/arch/hpcmips/vr/vrc4172gpio.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: vrc4172gpio.c,v 1.7 2003/09/26 15:29:22 simonb Exp $	*/
+/*	$NetBSD: vrc4172gpio.c,v 1.8 2003/10/23 20:25:40 he Exp $	*/
 /*-
  * Copyright (c) 2001 TAKEMRUA Shin. All rights reserved.
  *
@@ -29,7 +29,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vrc4172gpio.c,v 1.7 2003/09/26 15:29:22 simonb Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vrc4172gpio.c,v 1.8 2003/10/23 20:25:40 he Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -208,7 +208,7 @@ vrc4172gpio_attach(struct device *parent, struct device *self, void *aux)
 	sc->sc_args = *args; /* structure copy */
 	bus_space_map(sc->sc_iot, loc[HPCIOIFCF_ADDR], loc[HPCIOIFCF_SIZE],
 		      0 /* no cache */, &sc->sc_ioh);
-	if (sc->sc_ioh == NULL) {
+	if (sc->sc_ioh == 0) {
 		printf("%s: can't map bus space\n", sc->sc_dev.dv_xname);
 		return;
 	}
diff --git a/sys/arch/hpcmips/vr/vrdsiu_mouse.c b/sys/arch/hpcmips/vr/vrdsiu_mouse.c
index 0cc2d82cd5f7..fb24b9097f41 100644
--- a/sys/arch/hpcmips/vr/vrdsiu_mouse.c
+++ b/sys/arch/hpcmips/vr/vrdsiu_mouse.c
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vrdsiu_mouse.c,v 1.4 2003/07/15 02:29:35 lukem Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vrdsiu_mouse.c,v 1.5 2003/10/23 20:25:40 he Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -139,7 +139,7 @@ vrdsiu_attach(parent, self, aux)
 
 	bus_space_tag_t iot = va->va_iot;
 
-        if (va->va_parent_ioh != NULL)
+        if (va->va_parent_ioh != 0)
                 res = bus_space_subregion(iot, va->va_parent_ioh, va->va_addr,
                     va->va_size, &sc->sc_ioh);
         else
diff --git a/sys/arch/hpcmips/vr/vrkiu.c b/sys/arch/hpcmips/vr/vrkiu.c
index 4eadd9bac852..3d5f86beb78f 100644
--- a/sys/arch/hpcmips/vr/vrkiu.c
+++ b/sys/arch/hpcmips/vr/vrkiu.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: vrkiu.c,v 1.34 2003/07/15 02:29:36 lukem Exp $	*/
+/*	$NetBSD: vrkiu.c,v 1.35 2003/10/23 20:25:40 he Exp $	*/
 
 /*-
  * Copyright (c) 1999 SASAKI Takesi All rights reserved.
@@ -36,7 +36,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vrkiu.c,v 1.34 2003/07/15 02:29:36 lukem Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vrkiu.c,v 1.35 2003/10/23 20:25:40 he Exp $");
 
 #include <sys/param.h>
 #include <sys/tty.h>
@@ -144,7 +144,7 @@ vrkiuattach(struct device *parent, struct device *self, void *aux)
 	bus_space_tag_t iot = va->va_iot;
 	bus_space_handle_t ioh;
 
-	if (va->va_parent_ioh != NULL)
+	if (va->va_parent_ioh != 0)
 		res = bus_space_subregion(iot, va->va_parent_ioh, va->va_addr,
 		    va->va_size, &ioh);
 	else
diff --git a/sys/arch/hpcmips/vr/vrpiu.c b/sys/arch/hpcmips/vr/vrpiu.c
index c8cc71c982b1..aee8868ddb4b 100644
--- a/sys/arch/hpcmips/vr/vrpiu.c
+++ b/sys/arch/hpcmips/vr/vrpiu.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: vrpiu.c,v 1.29 2003/07/15 02:29:36 lukem Exp $	*/
+/*	$NetBSD: vrpiu.c,v 1.30 2003/10/23 20:25:40 he Exp $	*/
 
 /*
  * Copyright (c) 1999-2003 TAKEMURA Shin All rights reserved.
@@ -33,7 +33,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vrpiu.c,v 1.29 2003/07/15 02:29:36 lukem Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vrpiu.c,v 1.30 2003/10/23 20:25:40 he Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -208,7 +208,7 @@ vrpiu_init(struct vrpiu_softc *sc, void *aux)
 	bus_space_tag_t iot = va->va_iot;
 	struct platid_data *p;
 
-	if (va->va_parent_ioh != NULL)
+	if (va->va_parent_ioh != 0)
 		res = bus_space_subregion(iot, va->va_parent_ioh, va->va_addr,
 		    va->va_size, &sc->sc_ioh);
 	else
@@ -218,7 +218,7 @@ vrpiu_init(struct vrpiu_softc *sc, void *aux)
 		printf(": can't map bus space\n");
 		return;
 	}
-	if (va->va_parent_ioh != NULL)
+	if (va->va_parent_ioh != 0)
 		res = bus_space_subregion(iot, va->va_parent_ioh, va->va_addr2,
 		    va->va_size2, &sc->sc_buf_ioh);
 	else