diff --git a/sys/dev/atkbdc/atkbdc_isa.c b/sys/dev/atkbdc/atkbdc_isa.c
index b5d5e0029481..246e2745bbc6 100644
--- a/sys/dev/atkbdc/atkbdc_isa.c
+++ b/sys/dev/atkbdc/atkbdc_isa.c
@@ -62,9 +62,9 @@ static int	atkbdc_probe(device_t dev);
 static int	atkbdc_attach(device_t dev);
 static int	atkbdc_print_child(device_t bus, device_t dev);
 static int	atkbdc_read_ivar(device_t bus, device_t dev, int index,
-				 u_long *val);
+				 uintptr_t *val);
 static int	atkbdc_write_ivar(device_t bus, device_t dev, int index,
-				  u_long val);
+				  uintptr_t val);
 
 static device_method_t atkbdc_methods[] = {
 	DEVMETHOD(device_probe,		atkbdc_probe),
@@ -254,7 +254,7 @@ atkbdc_print_child(device_t bus, device_t dev)
 }
 
 static int
-atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
+atkbdc_read_ivar(device_t bus, device_t dev, int index, uintptr_t *val)
 {
 	atkbdc_device_t *ivar;
 
@@ -285,7 +285,7 @@ atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
 }
 
 static int
-atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val)
+atkbdc_write_ivar(device_t bus, device_t dev, int index, uintptr_t val)
 {
 	atkbdc_device_t *ivar;
 
diff --git a/sys/dev/atkbdc/atkbdc_subr.c b/sys/dev/atkbdc/atkbdc_subr.c
index b5d5e0029481..246e2745bbc6 100644
--- a/sys/dev/atkbdc/atkbdc_subr.c
+++ b/sys/dev/atkbdc/atkbdc_subr.c
@@ -62,9 +62,9 @@ static int	atkbdc_probe(device_t dev);
 static int	atkbdc_attach(device_t dev);
 static int	atkbdc_print_child(device_t bus, device_t dev);
 static int	atkbdc_read_ivar(device_t bus, device_t dev, int index,
-				 u_long *val);
+				 uintptr_t *val);
 static int	atkbdc_write_ivar(device_t bus, device_t dev, int index,
-				  u_long val);
+				  uintptr_t val);
 
 static device_method_t atkbdc_methods[] = {
 	DEVMETHOD(device_probe,		atkbdc_probe),
@@ -254,7 +254,7 @@ atkbdc_print_child(device_t bus, device_t dev)
 }
 
 static int
-atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
+atkbdc_read_ivar(device_t bus, device_t dev, int index, uintptr_t *val)
 {
 	atkbdc_device_t *ivar;
 
@@ -285,7 +285,7 @@ atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
 }
 
 static int
-atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val)
+atkbdc_write_ivar(device_t bus, device_t dev, int index, uintptr_t val)
 {
 	atkbdc_device_t *ivar;
 
diff --git a/sys/dev/fdc/fdc.c b/sys/dev/fdc/fdc.c
index c1b02b1ec409..cd4df134945b 100644
--- a/sys/dev/fdc/fdc.c
+++ b/sys/dev/fdc/fdc.c
@@ -660,7 +660,7 @@ static struct isa_pnp_id fdc_ids[] = {
 };
 
 static int
-fdc_read_ivar(device_t dev, device_t child, int which, u_long *result)
+fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 {
 	struct fdc_ivars *ivars = device_get_ivars(child);
 
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c
index 23d94745274b..205fdfc8a975 100644
--- a/sys/dev/pci/pci.c
+++ b/sys/dev/pci/pci.c
@@ -1267,7 +1267,7 @@ pci_probe_nomatch(device_t dev, device_t child)
 }
 
 static int
-pci_read_ivar(device_t dev, device_t child, int which, u_long *result)
+pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 {
 	struct pci_devinfo *dinfo;
 	pcicfgregs *cfg;
diff --git a/sys/isa/atkbdc_isa.c b/sys/isa/atkbdc_isa.c
index b5d5e0029481..246e2745bbc6 100644
--- a/sys/isa/atkbdc_isa.c
+++ b/sys/isa/atkbdc_isa.c
@@ -62,9 +62,9 @@ static int	atkbdc_probe(device_t dev);
 static int	atkbdc_attach(device_t dev);
 static int	atkbdc_print_child(device_t bus, device_t dev);
 static int	atkbdc_read_ivar(device_t bus, device_t dev, int index,
-				 u_long *val);
+				 uintptr_t *val);
 static int	atkbdc_write_ivar(device_t bus, device_t dev, int index,
-				  u_long val);
+				  uintptr_t val);
 
 static device_method_t atkbdc_methods[] = {
 	DEVMETHOD(device_probe,		atkbdc_probe),
@@ -254,7 +254,7 @@ atkbdc_print_child(device_t bus, device_t dev)
 }
 
 static int
-atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
+atkbdc_read_ivar(device_t bus, device_t dev, int index, uintptr_t *val)
 {
 	atkbdc_device_t *ivar;
 
@@ -285,7 +285,7 @@ atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val)
 }
 
 static int
-atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val)
+atkbdc_write_ivar(device_t bus, device_t dev, int index, uintptr_t val)
 {
 	atkbdc_device_t *ivar;
 
diff --git a/sys/isa/fd.c b/sys/isa/fd.c
index c1b02b1ec409..cd4df134945b 100644
--- a/sys/isa/fd.c
+++ b/sys/isa/fd.c
@@ -660,7 +660,7 @@ static struct isa_pnp_id fdc_ids[] = {
 };
 
 static int
-fdc_read_ivar(device_t dev, device_t child, int which, u_long *result)
+fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 {
 	struct fdc_ivars *ivars = device_get_ivars(child);
 
diff --git a/sys/pci/pci.c b/sys/pci/pci.c
index 23d94745274b..205fdfc8a975 100644
--- a/sys/pci/pci.c
+++ b/sys/pci/pci.c
@@ -1267,7 +1267,7 @@ pci_probe_nomatch(device_t dev, device_t child)
 }
 
 static int
-pci_read_ivar(device_t dev, device_t child, int which, u_long *result)
+pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 {
 	struct pci_devinfo *dinfo;
 	pcicfgregs *cfg;
diff --git a/sys/pci/pcisupport.c b/sys/pci/pcisupport.c
index 4ca279e7facc..8d1752f37da6 100644
--- a/sys/pci/pcisupport.c
+++ b/sys/pci/pcisupport.c
@@ -769,7 +769,7 @@ static int pcib_attach(device_t dev)
 }
 
 static int
-pcib_read_ivar(device_t dev, device_t child, int which, u_long *result)
+pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 {
 	if (which == PCIB_IVAR_HOSE) {
 		/*