diff --git a/sys/arm/allwinner/aw_gpio.c b/sys/arm/allwinner/aw_gpio.c
index b43654b82ad5..596d8308925c 100644
--- a/sys/arm/allwinner/aw_gpio.c
+++ b/sys/arm/allwinner/aw_gpio.c
@@ -559,10 +559,10 @@ aw_gpio_parse_function(phandle_t node)
 {
 	char *function;
 
-	if (OF_getprop_alloc(node, "function", sizeof(*function),
+	if (OF_getprop_alloc(node, "function",
 	    (void **)&function) != -1)
 		return (function);
-	if (OF_getprop_alloc(node, "allwinner,function", sizeof(*function),
+	if (OF_getprop_alloc(node, "allwinner,function",
 	    (void **)&function) != -1)
 		return (function);
 
diff --git a/sys/arm/allwinner/aw_if_dwc.c b/sys/arm/allwinner/aw_if_dwc.c
index aaf05df76794..67458f89c583 100644
--- a/sys/arm/allwinner/aw_if_dwc.c
+++ b/sys/arm/allwinner/aw_if_dwc.c
@@ -72,7 +72,7 @@ a20_if_dwc_init(device_t dev)
 	node = ofw_bus_get_node(dev);
 
 	/* Configure PHY for MII or RGMII mode */
-	if (OF_getprop_alloc(node, "phy-mode", 1, (void **)&phy_type)) {
+	if (OF_getprop_alloc(node, "phy-mode", (void **)&phy_type)) {
 		error = clk_get_by_ofw_name(dev, 0, "allwinner_gmac_tx", &clk_tx);
 		if (error != 0) {
 			device_printf(dev, "could not get tx clk\n");
diff --git a/sys/arm/allwinner/if_awg.c b/sys/arm/allwinner/if_awg.c
index 6f0cef88b185..a78826b2d4e0 100644
--- a/sys/arm/allwinner/if_awg.c
+++ b/sys/arm/allwinner/if_awg.c
@@ -1233,7 +1233,7 @@ awg_setup_phy(device_t dev)
 	node = ofw_bus_get_node(dev);
 	use_syscon = false;
 
-	if (OF_getprop_alloc(node, "phy-mode", 1, (void **)&phy_type) == 0)
+	if (OF_getprop_alloc(node, "phy-mode", (void **)&phy_type) == 0)
 		return (0);
 
 	if (sc->syscon != NULL || sc->res[_RES_SYSCON] != NULL)
diff --git a/sys/arm/amlogic/aml8726/aml8726_ccm.c b/sys/arm/amlogic/aml8726/aml8726_ccm.c
index 1c804c3ecda9..6fbc192a5350 100644
--- a/sys/arm/amlogic/aml8726/aml8726_ccm.c
+++ b/sys/arm/amlogic/aml8726/aml8726_ccm.c
@@ -87,7 +87,7 @@ aml8726_ccm_configure_gates(struct aml8726_ccm_softc *sc)
 
 	node = ofw_bus_get_node(sc->dev);
 
-	len = OF_getprop_alloc(node, "functions", sizeof(char),
+	len = OF_getprop_alloc(node, "functions",
 	    (void **)&functions);
 
 	if (len < 0) {
diff --git a/sys/arm/amlogic/aml8726/aml8726_mmc.c b/sys/arm/amlogic/aml8726/aml8726_mmc.c
index a671570eb4f9..beaf2cb0d74b 100644
--- a/sys/arm/amlogic/aml8726/aml8726_mmc.c
+++ b/sys/arm/amlogic/aml8726/aml8726_mmc.c
@@ -585,7 +585,7 @@ aml8726_mmc_attach(device_t dev)
 	}
 
 	len = OF_getprop_alloc(OF_node_from_xref(prop[0]), "amlogic,function",
-	    sizeof(char), (void **)&function_name);
+	    (void **)&function_name);
 
 	if (len < 0) {
 		device_printf(dev,
@@ -635,7 +635,7 @@ aml8726_mmc_attach(device_t dev)
 	}
 
 	len = OF_getprop_alloc(node, "mmc-voltages",
-	    sizeof(char), (void **)&voltages);
+	    (void **)&voltages);
 
 	if (len < 0) {
 		device_printf(dev, "missing mmc-voltages attribute in FDT\n");
diff --git a/sys/arm/amlogic/aml8726/aml8726_pinctrl.c b/sys/arm/amlogic/aml8726/aml8726_pinctrl.c
index 5465b1cbe04a..ad608b34fa75 100644
--- a/sys/arm/amlogic/aml8726/aml8726_pinctrl.c
+++ b/sys/arm/amlogic/aml8726/aml8726_pinctrl.c
@@ -194,7 +194,7 @@ aml8726_pinctrl_configure_pins(device_t dev, phandle_t cfgxref)
 	node = OF_node_from_xref(cfgxref);
 
 	len = OF_getprop_alloc(node, "amlogic,function",
-	    sizeof(char), (void **)&function_name);
+	    (void **)&function_name);
 
 	if (len < 0) {
 		device_printf(dev,
@@ -216,7 +216,7 @@ aml8726_pinctrl_configure_pins(device_t dev, phandle_t cfgxref)
 	OF_prop_free(function_name);
 
 	len = OF_getprop_alloc(node, "amlogic,pull",
-	    sizeof(char), (void **)&pull);
+	    (void **)&pull);
 
 	pm = aml8726_unknown_pm;
 
@@ -257,7 +257,7 @@ aml8726_pinctrl_configure_pins(device_t dev, phandle_t cfgxref)
 	}
 
 	len = OF_getprop_alloc(node, "amlogic,pins",
-	    sizeof(char), (void **)&pins);
+	    (void **)&pins);
 
 	if (len < 0) {
 		device_printf(dev, "missing amlogic,pins attribute in FDT\n");
diff --git a/sys/arm/amlogic/aml8726/aml8726_sdxc-m8.c b/sys/arm/amlogic/aml8726/aml8726_sdxc-m8.c
index cbd2f13340f2..fccc5cd393ad 100644
--- a/sys/arm/amlogic/aml8726/aml8726_sdxc-m8.c
+++ b/sys/arm/amlogic/aml8726/aml8726_sdxc-m8.c
@@ -796,7 +796,7 @@ aml8726_sdxc_attach(device_t dev)
 	}
 
 	len = OF_getprop_alloc(node, "mmc-voltages",
-	    sizeof(char), (void **)&voltages);
+	    (void **)&voltages);
 
 	if (len < 0) {
 		device_printf(dev, "missing mmc-voltages attribute in FDT\n");
diff --git a/sys/arm/amlogic/aml8726/aml8726_usb_phy-m3.c b/sys/arm/amlogic/aml8726/aml8726_usb_phy-m3.c
index fbf18b796009..2cd155ee4e6b 100644
--- a/sys/arm/amlogic/aml8726/aml8726_usb_phy-m3.c
+++ b/sys/arm/amlogic/aml8726/aml8726_usb_phy-m3.c
@@ -126,7 +126,7 @@ aml8726_usb_phy_mode(const char *dwcotg_path, uint32_t *mode)
 	*mode = 0;
 
 	len = OF_getprop_alloc(node, "dr_mode",
-	    sizeof(char), (void **)&usb_mode);
+	    (void **)&usb_mode);
 
 	if (len <= 0)
 		return (0);
diff --git a/sys/arm/amlogic/aml8726/aml8726_usb_phy-m6.c b/sys/arm/amlogic/aml8726/aml8726_usb_phy-m6.c
index 3c6b796ead39..b0e5c68f1805 100644
--- a/sys/arm/amlogic/aml8726/aml8726_usb_phy-m6.c
+++ b/sys/arm/amlogic/aml8726/aml8726_usb_phy-m6.c
@@ -154,7 +154,7 @@ aml8726_usb_phy_attach(device_t dev)
 	node = ofw_bus_get_node(dev);
 
 	len = OF_getprop_alloc(node, "force-aca",
-	    sizeof(char), (void **)&force_aca);
+	    (void **)&force_aca);
 
 	sc->force_aca = FALSE;
 
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_gpio.c b/sys/arm/broadcom/bcm2835/bcm2835_gpio.c
index a9c70e12e99f..aaec0ee0ba97 100644
--- a/sys/arm/broadcom/bcm2835/bcm2835_gpio.c
+++ b/sys/arm/broadcom/bcm2835/bcm2835_gpio.c
@@ -677,7 +677,7 @@ bcm_gpio_get_reserved_pins(struct bcm_gpio_softc *sc)
 	reserved = 0;
 	node = OF_child(gpio);
 	while ((node != 0) && (reserved == 0)) {
-		len = OF_getprop_alloc(node, "name", 1, (void **)&name);
+		len = OF_getprop_alloc(node, "name", (void **)&name);
 		if (len == -1)
 			return (-1);
 		if (strcmp(name, "reserved") == 0)
diff --git a/sys/arm/freescale/vybrid/vf_ccm.c b/sys/arm/freescale/vybrid/vf_ccm.c
index 0dd57671f090..35806cae1d9f 100644
--- a/sys/arm/freescale/vybrid/vf_ccm.c
+++ b/sys/arm/freescale/vybrid/vf_ccm.c
@@ -419,7 +419,7 @@ ccm_fdt_set(struct ccm_softc *sc)
 
 		if ((len = OF_getproplen(child, "clock_names")) > 0) {
 			len = OF_getproplen(child, "clock_names");
-			OF_getprop_alloc(child, "clock_names", 1,
+			OF_getprop_alloc(child, "clock_names",
 			    (void **)&fdt_config);
 
 			while (len > 0) {
diff --git a/sys/arm/mv/mv_localbus.c b/sys/arm/mv/mv_localbus.c
index 0febb6305eda..e2367ceb0a86 100644
--- a/sys/arm/mv/mv_localbus.c
+++ b/sys/arm/mv/mv_localbus.c
@@ -175,7 +175,7 @@ fdt_localbus_reg_decode(phandle_t node, struct localbus_softc *sc,
 		return (ENXIO);
 
 	tuple_size = sizeof(pcell_t) * (addr_cells + size_cells);
-	tuples = OF_getprop_alloc(node, "reg", tuple_size, (void **)&reg);
+	tuples = OF_getprop_alloc_multi(node, "reg", tuple_size, (void **)&reg);
 	debugf("addr_cells = %d, size_cells = %d\n", addr_cells, size_cells);
 	debugf("tuples = %d, tuple size = %d\n", tuples, tuple_size);
 	if (tuples <= 0)
diff --git a/sys/arm/nvidia/as3722_gpio.c b/sys/arm/nvidia/as3722_gpio.c
index 3529be89f4ec..2ec5b5282c16 100644
--- a/sys/arm/nvidia/as3722_gpio.c
+++ b/sys/arm/nvidia/as3722_gpio.c
@@ -212,12 +212,12 @@ as3722_pinmux_read_node(struct as3722_softc *sc, phandle_t node,
 {
 	int rv, i;
 
-	*lpins = OF_getprop_alloc(node, "pins", 1, (void **)pins);
+	*lpins = OF_getprop_alloc(node, "pins", (void **)pins);
 	if (*lpins <= 0)
 		return (ENOENT);
 
 	/* Read function (mux) settings. */
-	rv = OF_getprop_alloc(node, "function", 1, (void **)&cfg->function);
+	rv = OF_getprop_alloc(node, "function", (void **)&cfg->function);
 	if (rv <= 0)
 		cfg->function = NULL;
 
diff --git a/sys/arm/nvidia/as3722_regulators.c b/sys/arm/nvidia/as3722_regulators.c
index 8ea00d902cab..5347d85cf302 100644
--- a/sys/arm/nvidia/as3722_regulators.c
+++ b/sys/arm/nvidia/as3722_regulators.c
@@ -542,7 +542,7 @@ struct as3722_regnode_init_def *init_def)
 	if (rv <= 0)
 		return;
 	supply_node = OF_node_from_xref(supply_node);
-	rv = OF_getprop_alloc(supply_node, "regulator-name", 1,
+	rv = OF_getprop_alloc(supply_node, "regulator-name",
 	    (void **)&init_def->reg_init_def.parent_name);
 	if (rv <= 0)
 		init_def->reg_init_def.parent_name = NULL;
diff --git a/sys/arm/nvidia/tegra124/tegra124_xusbpadctl.c b/sys/arm/nvidia/tegra124/tegra124_xusbpadctl.c
index 7489f13a0a83..16b25483b146 100644
--- a/sys/arm/nvidia/tegra124/tegra124_xusbpadctl.c
+++ b/sys/arm/nvidia/tegra124/tegra124_xusbpadctl.c
@@ -874,7 +874,7 @@ process_lane(struct padctl_softc *sc, phandle_t node, struct padctl_pad *pad)
 
 	name = NULL;
 	function = NULL;
-	rv = OF_getprop_alloc(node, "name", 1, (void **)&name);
+	rv = OF_getprop_alloc(node, "name", (void **)&name);
 	if (rv <= 0) {
 		device_printf(sc->dev, "Cannot read lane name.\n");
 		return (ENXIO);
@@ -888,7 +888,7 @@ process_lane(struct padctl_softc *sc, phandle_t node, struct padctl_pad *pad)
 	}
 
 	/* Read function (mux) settings. */
-	rv = OF_getprop_alloc(node, "nvidia,function", 1, (void **)&function);
+	rv = OF_getprop_alloc(node, "nvidia,function", (void **)&function);
 	if (rv <= 0) {
 		device_printf(sc->dev, "Cannot read lane function.\n");
 		rv = ENXIO;
@@ -947,7 +947,7 @@ process_pad(struct padctl_softc *sc, phandle_t node)
 	int rv;
 
 	name = NULL;
-	rv = OF_getprop_alloc(node, "name", 1, (void **)&name);
+	rv = OF_getprop_alloc(node, "name", (void **)&name);
 	if (rv <= 0) {
 		device_printf(sc->dev, "Cannot read pad name.\n");
 		return (ENXIO);
@@ -992,7 +992,7 @@ process_port(struct padctl_softc *sc, phandle_t node)
 	int rv;
 
 	name = NULL;
-	rv = OF_getprop_alloc(node, "name", 1, (void **)&name);
+	rv = OF_getprop_alloc(node, "name", (void **)&name);
 	if (rv <= 0) {
 		device_printf(sc->dev, "Cannot read port name.\n");
 		return (ENXIO);
diff --git a/sys/arm/nvidia/tegra_pinmux.c b/sys/arm/nvidia/tegra_pinmux.c
index 3dcb9f840596..ae8ed5d83e64 100644
--- a/sys/arm/nvidia/tegra_pinmux.c
+++ b/sys/arm/nvidia/tegra_pinmux.c
@@ -648,12 +648,12 @@ pinmux_read_node(struct pinmux_softc *sc, phandle_t node, struct pincfg *cfg,
 {
 	int rv, i;
 
-	*lpins = OF_getprop_alloc(node, "nvidia,pins", 1, (void **)pins);
+	*lpins = OF_getprop_alloc(node, "nvidia,pins", (void **)pins);
 	if (*lpins <= 0)
 		return (ENOENT);
 
 	/* Read function (mux) settings. */
-	rv = OF_getprop_alloc(node, "nvidia,function", 1,
+	rv = OF_getprop_alloc(node, "nvidia,function",
 	    (void **)&cfg->function);
 	if (rv <= 0)
 		cfg->function = NULL;
diff --git a/sys/arm/nvidia/tegra_usbphy.c b/sys/arm/nvidia/tegra_usbphy.c
index 34034416d9f2..bc2349023a9d 100644
--- a/sys/arm/nvidia/tegra_usbphy.c
+++ b/sys/arm/nvidia/tegra_usbphy.c
@@ -593,7 +593,7 @@ usb_get_ifc_mode(device_t dev, phandle_t node, char *name)
 	int rv;
 	enum usb_ifc_type ret;
 
-	rv = OF_getprop_alloc(node, name, 1, (void **)&tmpstr);
+	rv = OF_getprop_alloc(node, name, (void **)&tmpstr);
 	if (rv <= 0)
 		return (USB_IFC_TYPE_UNKNOWN);
 
@@ -615,7 +615,7 @@ usb_get_dr_mode(device_t dev, phandle_t node, char *name)
 	int rv;
 	enum usb_dr_mode ret;
 
-	rv = OF_getprop_alloc(node, name, 1, (void **)&tmpstr);
+	rv = OF_getprop_alloc(node, name, (void **)&tmpstr);
 	if (rv <= 0)
 		return (USB_DR_MODE_UNKNOWN);
 
diff --git a/sys/arm/ti/cpsw/if_cpsw.c b/sys/arm/ti/cpsw/if_cpsw.c
index b7c6e42b3709..4cb55ae9b04a 100644
--- a/sys/arm/ti/cpsw/if_cpsw.c
+++ b/sys/arm/ti/cpsw/if_cpsw.c
@@ -746,7 +746,7 @@ cpsw_get_fdt_data(struct cpsw_softc *sc, int port)
 	phy = -1;
 	vlan = -1;
 	for (child = OF_child(sc->node); child != 0; child = OF_peer(child)) {
-		if (OF_getprop_alloc(child, "name", 1, (void **)&name) < 0)
+		if (OF_getprop_alloc(child, "name", (void **)&name) < 0)
 			continue;
 		if (sscanf(name, "slave@%lx", &mdio_child_addr) != 1) {
 			OF_prop_free(name);
diff --git a/sys/arm/ti/ti_hwmods.c b/sys/arm/ti/ti_hwmods.c
index 1dfb074a7903..3d0b07ecd90b 100644
--- a/sys/arm/ti/ti_hwmods.c
+++ b/sys/arm/ti/ti_hwmods.c
@@ -110,7 +110,7 @@ ti_hwmods_get_clock(device_t dev)
 	if ((node = ofw_bus_get_node(dev)) == 0)
 		return (INVALID_CLK_IDENT);
 
-	if ((len = OF_getprop_alloc(node, "ti,hwmods", 1, (void**)&name)) <= 0)
+	if ((len = OF_getprop_alloc(node, "ti,hwmods", (void**)&name)) <= 0)
 		return (INVALID_CLK_IDENT);
 
 	buf = name;
@@ -148,7 +148,7 @@ int ti_hwmods_contains(device_t dev, const char *hwmod)
 	if ((node = ofw_bus_get_node(dev)) == 0)
 		return (0);
 
-	if ((len = OF_getprop_alloc(node, "ti,hwmods", 1, (void**)&name)) <= 0)
+	if ((len = OF_getprop_alloc(node, "ti,hwmods", (void**)&name)) <= 0)
 		return (0);
 
 	buf = name;
@@ -182,7 +182,7 @@ ti_hwmods_get_unit(device_t dev, const char *hwmod)
 	if ((node = ofw_bus_get_node(dev)) == 0)
 		return (0);
 
-	if ((len = OF_getprop_alloc(node, "ti,hwmods", 1, (void**)&name)) <= 0)
+	if ((len = OF_getprop_alloc(node, "ti,hwmods", (void**)&name)) <= 0)
 		return (0);
 
 	buf = name;
diff --git a/sys/arm/ti/usb/omap_host.c b/sys/arm/ti/usb/omap_host.c
index 0bc1118db58b..304e80d33df8 100644
--- a/sys/arm/ti/usb/omap_host.c
+++ b/sys/arm/ti/usb/omap_host.c
@@ -392,7 +392,7 @@ omap_uhh_attach(device_t dev)
 		snprintf(propname, sizeof(propname),
 		    "port%d-mode", i+1);
 
-		if (OF_getprop_alloc(node, propname, 1, (void**)&mode) <= 0)
+		if (OF_getprop_alloc(node, propname, (void**)&mode) <= 0)
 			continue;
 		if (strcmp(mode, "ehci-phy") == 0)
 			isc->port_mode[i] = EHCI_HCD_OMAP_MODE_PHY;
diff --git a/sys/dev/altera/avgen/altera_avgen_fdt.c b/sys/dev/altera/avgen/altera_avgen_fdt.c
index 12a31d4e384c..50cf26bc56be 100644
--- a/sys/dev/altera/avgen/altera_avgen_fdt.c
+++ b/sys/dev/altera/avgen/altera_avgen_fdt.c
@@ -100,13 +100,13 @@ altera_avgen_fdt_attach(device_t dev)
 	node = ofw_bus_get_node(dev);
 	if (OF_getprop(node, "sri-cambridge,width", &cell, sizeof(cell)) > 0)
 		sc->avg_width = cell;
-	(void)OF_getprop_alloc(node, "sri-cambridge,fileio", sizeof(char),
+	(void)OF_getprop_alloc(node, "sri-cambridge,fileio",
 	    (void **)&str_fileio);
-	(void)OF_getprop_alloc(node, "sri-cambridge,geomio", sizeof(char),
+	(void)OF_getprop_alloc(node, "sri-cambridge,geomio",
 	    (void **)&str_geomio);
-	(void)OF_getprop_alloc(node, "sri-cambridge,mmapio", sizeof(char),
+	(void)OF_getprop_alloc(node, "sri-cambridge,mmapio",
 	    (void **)&str_mmapio);
-	(void)OF_getprop_alloc(node,  "sri-cambridge,devname", sizeof(char),
+	(void)OF_getprop_alloc(node,  "sri-cambridge,devname",
 	    (void **)&str_devname);
 	if (OF_getprop(node, "sri-cambridge,devunit", &cell, sizeof(cell)) > 0)
 		devunit = cell;
diff --git a/sys/dev/atkbdc/atkbdc_ebus.c b/sys/dev/atkbdc/atkbdc_ebus.c
index 704837e39c6e..53c40433d6ba 100644
--- a/sys/dev/atkbdc/atkbdc_ebus.c
+++ b/sys/dev/atkbdc/atkbdc_ebus.c
@@ -238,7 +238,7 @@ atkbdc_ebus_attach(device_t dev)
 	children = 0;
 	for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
 	    child = OF_peer(child)) {
-		if ((OF_getprop_alloc(child, "name", 1, (void **)&cname)) == -1)
+		if ((OF_getprop_alloc(child, "name", (void **)&cname)) == -1)
 			continue;
 		if (children >= 2) {
 			device_printf(dev,
diff --git a/sys/dev/etherswitch/e6000sw/e6000sw.c b/sys/dev/etherswitch/e6000sw/e6000sw.c
index d9e3570bf69d..931d6ad33040 100644
--- a/sys/dev/etherswitch/e6000sw/e6000sw.c
+++ b/sys/dev/etherswitch/e6000sw/e6000sw.c
@@ -276,7 +276,7 @@ e6000sw_parse_child_fdt(e6000sw_softc_t *sc, phandle_t child, int *pport)
 		return (ENXIO);
 	*pport = port;
 
-	if (OF_getprop_alloc(child, "label", 1, (void **)&portlabel) > 0) {
+	if (OF_getprop_alloc(child, "label", (void **)&portlabel) > 0) {
 		if (strncmp(portlabel, "cpu", 3) == 0) {
 			device_printf(sc->dev, "CPU port at %d\n", port);
 			sc->cpuports_mask |= (1 << port);
@@ -287,7 +287,7 @@ e6000sw_parse_child_fdt(e6000sw_softc_t *sc, phandle_t child, int *pport)
 
 	fixed_link = OF_child(child);
 	if (fixed_link != 0 &&
-	    OF_getprop_alloc(fixed_link, "name", 1, (void **)&name) > 0) {
+	    OF_getprop_alloc(fixed_link, "name", (void **)&name) > 0) {
 		if (strncmp(name, "fixed-link", 10) == 0) {
 			/* Assume defaults: 1g - full-duplex. */
 			sc->fixed_mask |= (1 << port);
diff --git a/sys/dev/extres/regulator/regulator.c b/sys/dev/extres/regulator/regulator.c
index 45129f068d42..d0528093e228 100644
--- a/sys/dev/extres/regulator/regulator.c
+++ b/sys/dev/extres/regulator/regulator.c
@@ -1007,7 +1007,7 @@ regulator_parse_ofw_stdparam(device_t pdev, phandle_t node,
 	int rv;
 
 	par = &def->std_param;
-	rv = OF_getprop_alloc(node, "regulator-name", 1,
+	rv = OF_getprop_alloc(node, "regulator-name",
 	    (void **)&def->name);
 	if (rv <= 0) {
 		device_printf(pdev, "%s: Missing regulator name\n",
@@ -1057,7 +1057,7 @@ regulator_parse_ofw_stdparam(device_t pdev, phandle_t node,
 	rv = OF_getencprop(node, "vin-supply", &supply_xref,
 	    sizeof(supply_xref));
 	if (rv >=  0) {
-		rv = OF_getprop_alloc(supply_xref, "regulator-name", 1,
+		rv = OF_getprop_alloc(supply_xref, "regulator-name",
 		    (void **)&def->parent_name);
 		if (rv <= 0)
 			def->parent_name = NULL;
diff --git a/sys/dev/fdt/fdt_pinctrl.c b/sys/dev/fdt/fdt_pinctrl.c
index 0c88e3fa908b..389dd0749c91 100644
--- a/sys/dev/fdt/fdt_pinctrl.c
+++ b/sys/dev/fdt/fdt_pinctrl.c
@@ -67,7 +67,7 @@ fdt_pinctrl_configure_by_name(device_t client, const char * name)
 	int i, offset, nameslen;
 
 	nameslen = OF_getprop_alloc(ofw_bus_get_node(client), "pinctrl-names",
-	    sizeof(*names), (void **)&names);
+	    (void **)&names);
 	if (nameslen <= 0)
 		return (ENOENT);
 	for (i = 0, offset = 0; offset < nameslen; i++) {
diff --git a/sys/dev/fdt/fdt_slicer.c b/sys/dev/fdt/fdt_slicer.c
index 5470256073e0..312300e64d3b 100644
--- a/sys/dev/fdt/fdt_slicer.c
+++ b/sys/dev/fdt/fdt_slicer.c
@@ -94,12 +94,12 @@ fdt_flash_fill_slices(device_t dev, const char *provider __unused,
 		/*
 		 * Retrieve label.
 		 */
-		name_len = OF_getprop_alloc(dt_child, "label", sizeof(char),
+		name_len = OF_getprop_alloc(dt_child, "label",
 		    (void **)&slice_name);
 		if (name_len <= 0) {
 			/* Use node name if no label defined */
 			name_len = OF_getprop_alloc(dt_child, "name",
-			    sizeof(char), (void **)&slice_name);
+			    (void **)&slice_name);
 			if (name_len <= 0) {
 				debugf("slice i=%d with no name\n", i);
 				slice_name = NULL;
diff --git a/sys/dev/gpio/gpiokeys.c b/sys/dev/gpio/gpiokeys.c
index d2662e17337c..3b727985b17e 100644
--- a/sys/dev/gpio/gpiokeys.c
+++ b/sys/dev/gpio/gpiokeys.c
@@ -271,8 +271,8 @@ gpiokeys_attach_key(struct gpiokeys_softc *sc, phandle_t node,
 	callout_init_mtx(&key->repeat_callout, &key->mtx, 0);
 
 	name = NULL;
-	if (OF_getprop_alloc(node, "label", 1, (void **)&name) == -1)
-		OF_getprop_alloc(node, "name", 1, (void **)&name);
+	if (OF_getprop_alloc(node, "label", (void **)&name) == -1)
+		OF_getprop_alloc(node, "name", (void **)&name);
 
 	if (name != NULL)
 		key_name = name;
diff --git a/sys/dev/gpio/gpioled_fdt.c b/sys/dev/gpio/gpioled_fdt.c
index 3c3478861dfa..3f627706860a 100644
--- a/sys/dev/gpio/gpioled_fdt.c
+++ b/sys/dev/gpio/gpioled_fdt.c
@@ -89,7 +89,7 @@ gpioleds_attach_led(struct gpioleds_softc *sc, phandle_t node,
 
 	state = 0;
 	if (OF_getprop_alloc(node, "default-state",
-	    sizeof(char), (void **)&default_state) != -1) {
+	    (void **)&default_state) != -1) {
 		if (strcasecmp(default_state, "on") == 0)
 			state = 1;
 		else if (strcasecmp(default_state, "off") == 0)
@@ -105,8 +105,8 @@ gpioleds_attach_led(struct gpioleds_softc *sc, phandle_t node,
 	}
 
 	name = NULL;
-	if (OF_getprop_alloc(node, "label", 1, (void **)&name) == -1)
-		OF_getprop_alloc(node, "name", 1, (void **)&name);
+	if (OF_getprop_alloc(node, "label", (void **)&name) == -1)
+		OF_getprop_alloc(node, "name", (void **)&name);
 
 	if (name == NULL) {
 		device_printf(sc->sc_dev,
diff --git a/sys/dev/iicbus/adt746x.c b/sys/dev/iicbus/adt746x.c
index bd4bb70103c6..3b908453a0d7 100644
--- a/sys/dev/iicbus/adt746x.c
+++ b/sys/dev/iicbus/adt746x.c
@@ -360,8 +360,8 @@ adt746x_fill_fan_prop(device_t dev)
 	child = ofw_bus_get_node(dev);
 
 	/* Fill the fan location property. */
-	location_len = OF_getprop_alloc(child, "hwctrl-location", 1, (void **)&location);
-	id_len = OF_getprop_alloc(child, "hwctrl-id", sizeof(cell_t), (void **)&id);
+	location_len = OF_getprop_alloc(child, "hwctrl-location", (void **)&location);
+	id_len = OF_getprop_alloc_multi(child, "hwctrl-id", sizeof(cell_t), (void **)&id);
 	if (location_len == -1 || id_len == -1) {
 		OF_prop_free(location);
 		OF_prop_free(id);
diff --git a/sys/dev/le/lebuffer_sbus.c b/sys/dev/le/lebuffer_sbus.c
index 9c5620dad918..f40aca1b6830 100644
--- a/sys/dev/le/lebuffer_sbus.c
+++ b/sys/dev/le/lebuffer_sbus.c
@@ -183,7 +183,7 @@ lebuffer_setup_dinfo(device_t dev, phandle_t node)
 	}
 	resource_list_init(&ldi->ldi_rl);
 	slot = -1;
-	nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)&reg);
+	nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*reg), (void **)&reg);
 	if (nreg == -1) {
 		device_printf(dev, "<%s>: incomplete\n",
 		    ldi->ldi_obdinfo.obd_name);
@@ -217,7 +217,7 @@ lebuffer_setup_dinfo(device_t dev, phandle_t node)
 	/*
 	 * The `interrupts' property contains the SBus interrupt level.
 	 */
-	nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr),
+	nintr = OF_getprop_alloc_multi(node, "interrupts", sizeof(*intr),
 	    (void **)&intr);
 	if (nintr != -1) {
 		for (i = 0; i < nintr; i++) {
diff --git a/sys/dev/neta/if_mvneta_fdt.c b/sys/dev/neta/if_mvneta_fdt.c
index a858babf06ec..6b773e379e88 100644
--- a/sys/dev/neta/if_mvneta_fdt.c
+++ b/sys/dev/neta/if_mvneta_fdt.c
@@ -159,7 +159,7 @@ mvneta_fdt_phy_acquire(device_t dev)
 		/* Test for fixed-link (present i.e. in 388-gp) */
 		for (child = OF_child(node); child != 0; child = OF_peer(child)) {
 			if (OF_getprop_alloc(child,
-			    "name", 1, (void **)&name) <= 0) {
+			    "name", (void **)&name) <= 0) {
 				continue;
 			}
 			if (strncmp(name, "fixed-link", 10) == 0) {
diff --git a/sys/dev/ofw/ofw_bus_subr.c b/sys/dev/ofw/ofw_bus_subr.c
index 3e2da5a2e8ce..80b59f43708a 100644
--- a/sys/dev/ofw/ofw_bus_subr.c
+++ b/sys/dev/ofw/ofw_bus_subr.c
@@ -57,12 +57,12 @@ ofw_bus_gen_setup_devinfo(struct ofw_bus_devinfo *obd, phandle_t node)
 	if (obd == NULL)
 		return (ENOMEM);
 	/* The 'name' property is considered mandatory. */
-	if ((OF_getprop_alloc(node, "name", 1, (void **)&obd->obd_name)) == -1)
+	if ((OF_getprop_alloc(node, "name", (void **)&obd->obd_name)) == -1)
 		return (EINVAL);
-	OF_getprop_alloc(node, "compatible", 1, (void **)&obd->obd_compat);
-	OF_getprop_alloc(node, "device_type", 1, (void **)&obd->obd_type);
-	OF_getprop_alloc(node, "model", 1, (void **)&obd->obd_model);
-	OF_getprop_alloc(node, "status", 1, (void **)&obd->obd_status);
+	OF_getprop_alloc(node, "compatible", (void **)&obd->obd_compat);
+	OF_getprop_alloc(node, "device_type", (void **)&obd->obd_type);
+	OF_getprop_alloc(node, "model", (void **)&obd->obd_model);
+	OF_getprop_alloc(node, "status", (void **)&obd->obd_status);
 	obd->obd_node = node;
 	return (0);
 }
@@ -502,7 +502,7 @@ ofw_bus_reg_to_rl_helper(device_t dev, phandle_t node, pcell_t acells, pcell_t s
 	 * This may be just redundant when having ofw_bus_devinfo
 	 * but makes this routine independent of it.
 	 */
-	ret = OF_getprop_alloc(node, "name", sizeof(*name), (void **)&name);
+	ret = OF_getprop_alloc(node, "name", (void **)&name);
 	if (ret == -1)
 		name = NULL;
 
@@ -720,7 +720,7 @@ ofw_bus_find_child(phandle_t start, const char *child_name)
 	phandle_t child;
 
 	for (child = OF_child(start); child != 0; child = OF_peer(child)) {
-		ret = OF_getprop_alloc(child, "name", sizeof(*name), (void **)&name);
+		ret = OF_getprop_alloc(child, "name", (void **)&name);
 		if (ret == -1)
 			continue;
 		if (strcmp(name, child_name) == 0) {
@@ -916,7 +916,7 @@ ofw_bus_find_string_index(phandle_t node, const char *list_name,
 	int rv, i, cnt, nelems;
 
 	elems = NULL;
-	nelems = OF_getprop_alloc(node, list_name, 1, (void **)&elems);
+	nelems = OF_getprop_alloc(node, list_name, (void **)&elems);
 	if (nelems <= 0)
 		return (ENOENT);
 
@@ -947,7 +947,7 @@ ofw_bus_string_list_to_array(phandle_t node, const char *list_name,
 	int i, cnt, nelems, len;
 
 	elems = NULL;
-	nelems = OF_getprop_alloc(node, list_name, 1, (void **)&elems);
+	nelems = OF_getprop_alloc(node, list_name, (void **)&elems);
 	if (nelems <= 0)
 		return (nelems);
 
diff --git a/sys/dev/ofw/openfirm.c b/sys/dev/ofw/openfirm.c
index dc781d42ad8c..4f1066e1cb14 100644
--- a/sys/dev/ofw/openfirm.c
+++ b/sys/dev/ofw/openfirm.c
@@ -438,13 +438,37 @@ OF_searchencprop(phandle_t node, const char *propname, void *buf, size_t len)
 	return (-1);
 }
 
+/*
+ * Store the value of a property of a package into newly allocated memory
+ * (using the M_OFWPROP malloc pool and M_WAITOK).
+ */
+ssize_t
+OF_getprop_alloc(phandle_t package, const char *propname, void **buf)
+{
+	int len;
+
+	*buf = NULL;
+	if ((len = OF_getproplen(package, propname)) == -1)
+		return (-1);
+
+	if (len > 0) {
+		*buf = malloc(len, M_OFWPROP, M_WAITOK);
+		if (OF_getprop(package, propname, *buf, len) == -1) {
+			free(*buf, M_OFWPROP);
+			*buf = NULL;
+			return (-1);
+		}
+	}
+	return (len);
+}
+
 /*
  * Store the value of a property of a package into newly allocated memory
  * (using the M_OFWPROP malloc pool and M_WAITOK).  elsz is the size of a
  * single element, the number of elements is return in number.
  */
 ssize_t
-OF_getprop_alloc(phandle_t package, const char *propname, int elsz, void **buf)
+OF_getprop_alloc_multi(phandle_t package, const char *propname, int elsz, void **buf)
 {
 	int len;
 
@@ -453,15 +477,18 @@ OF_getprop_alloc(phandle_t package, const char *propname, int elsz, void **buf)
 	    len % elsz != 0)
 		return (-1);
 
-	*buf = malloc(len, M_OFWPROP, M_WAITOK);
-	if (OF_getprop(package, propname, *buf, len) == -1) {
-		free(*buf, M_OFWPROP);
-		*buf = NULL;
-		return (-1);
+	if (len > 0) {
+		*buf = malloc(len, M_OFWPROP, M_WAITOK);
+		if (OF_getprop(package, propname, *buf, len) == -1) {
+			free(*buf, M_OFWPROP);
+			*buf = NULL;
+			return (-1);
+		}
 	}
 	return (len / elsz);
 }
 
+
 ssize_t
 OF_getencprop_alloc(phandle_t package, const char *name, int elsz, void **buf)
 {
@@ -469,7 +496,7 @@ OF_getencprop_alloc(phandle_t package, const char *name, int elsz, void **buf)
 	pcell_t *cell;
 	int i;
 
-	retval = OF_getprop_alloc(package, name, elsz, buf);
+	retval = OF_getprop_alloc_multi(package, name, elsz, buf);
 	if (retval == -1)
 		return (-1);
  	if (retval * elsz % 4 != 0) {
diff --git a/sys/dev/ofw/openfirm.h b/sys/dev/ofw/openfirm.h
index e17011640b55..4983a00b015c 100644
--- a/sys/dev/ofw/openfirm.h
+++ b/sys/dev/ofw/openfirm.h
@@ -116,6 +116,8 @@ ssize_t		OF_searchprop(phandle_t node, const char *propname, void *buf,
 ssize_t		OF_searchencprop(phandle_t node, const char *propname,
 		    void *buf, size_t len);
 ssize_t		OF_getprop_alloc(phandle_t node, const char *propname,
+		    void **buf);
+ssize_t		OF_getprop_alloc_multi(phandle_t node, const char *propname,
 		    int elsz, void **buf);
 ssize_t		OF_getencprop_alloc(phandle_t node, const char *propname,
 		    int elsz, void **buf);
diff --git a/sys/dev/usb/controller/ehci_fsl.c b/sys/dev/usb/controller/ehci_fsl.c
index 525a2c49a8c3..726c40a4b31f 100644
--- a/sys/dev/usb/controller/ehci_fsl.c
+++ b/sys/dev/usb/controller/ehci_fsl.c
@@ -175,7 +175,7 @@ enable_usb(device_t dev, bus_space_tag_t iot, bus_space_handle_t ioh)
 
 	node = ofw_bus_get_node(dev);
 	if ((node != 0) &&
-	    (OF_getprop_alloc(node, "phy_type", 1, (void **)&phy_type) > 0)) {
+	    (OF_getprop_alloc(node, "phy_type", (void **)&phy_type) > 0)) {
 		if (strncasecmp(phy_type, "utmi", strlen("utmi")) == 0)
 			tmp |= UTMI_PHY_EN;
 		OF_prop_free(phy_type);
diff --git a/sys/dev/vnic/thunder_bgx_fdt.c b/sys/dev/vnic/thunder_bgx_fdt.c
index 380d7f90697e..bdb7594a0fb4 100644
--- a/sys/dev/vnic/thunder_bgx_fdt.c
+++ b/sys/dev/vnic/thunder_bgx_fdt.c
@@ -396,7 +396,7 @@ bgx_fdt_init_phy(struct bgx *bgx)
 				continue;
 			}
 		} else {
-			len = OF_getprop_alloc(child, "name", 1,
+			len = OF_getprop_alloc(child, "name",
 			    (void **)&node_name);
 			if (len <= 0) {
 				continue;
diff --git a/sys/mips/mediatek/mtk_pinctrl.c b/sys/mips/mediatek/mtk_pinctrl.c
index 8897e73cf6fc..a965c75ac4b2 100644
--- a/sys/mips/mediatek/mtk_pinctrl.c
+++ b/sys/mips/mediatek/mtk_pinctrl.c
@@ -136,7 +136,7 @@ mtk_pinctrl_process_node(device_t dev, struct mtk_pin_group *table,
 	if (num_groups <= 0)
 		return (ENOENT);
 
-	if (OF_getprop_alloc(node, "ralink,function", sizeof(*pin_function),
+	if (OF_getprop_alloc_multi(node, "ralink,function", sizeof(*pin_function),
 			     (void **)&pin_function) == -1) {
 		ret = ENOENT;
 		goto out;
diff --git a/sys/powerpc/mpc85xx/fsl_diu.c b/sys/powerpc/mpc85xx/fsl_diu.c
index df925a6de3e9..b899bdbe752f 100644
--- a/sys/powerpc/mpc85xx/fsl_diu.c
+++ b/sys/powerpc/mpc85xx/fsl_diu.c
@@ -362,7 +362,7 @@ diu_attach(device_t dev)
 	}
 
 	/* TODO: Eventually, allow EDID to be dynamically provided. */
-	if (OF_getprop_alloc(node, "edid", 1, &edid_cells) <= 0) {
+	if (OF_getprop_alloc(node, "edid", &edid_cells) <= 0) {
 		/*
 		 * u-boot uses the environment variable name 'video-mode', so
 		 * just use the same name here.  Should allow another variable
diff --git a/sys/powerpc/powermac/macio.c b/sys/powerpc/powermac/macio.c
index b8e52f52edb0..42eb5dcd8c58 100644
--- a/sys/powerpc/powermac/macio.c
+++ b/sys/powerpc/powermac/macio.c
@@ -203,10 +203,10 @@ macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo)
 		return;
 	}
 
-	nintr = OF_getprop_alloc(devnode, "interrupts", sizeof(*intr), 
+	nintr = OF_getprop_alloc_multi(devnode, "interrupts", sizeof(*intr), 
 		(void **)&intr);
 	if (nintr == -1) {
-		nintr = OF_getprop_alloc(devnode, "AAPL,interrupts", 
+		nintr = OF_getprop_alloc_multi(devnode, "AAPL,interrupts", 
 			sizeof(*intr), (void **)&intr);
 		if (nintr == -1)
 			return;
@@ -243,7 +243,7 @@ macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo)
 	char		buf[8];
 	int		i, layout_id = 0, nreg, res;
 
-	nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)&reg);
+	nreg = OF_getprop_alloc_multi(devnode, "reg", sizeof(*reg), (void **)&reg);
 	if (nreg == -1)
 		return;
 
@@ -269,7 +269,7 @@ macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo)
 				sizeof(layout_id));
 
                 if (res > 0 && (layout_id == 36 || layout_id == 76)) {
-                        res = OF_getprop_alloc(OF_parent(devnode), "reg",
+                        res = OF_getprop_alloc_multi(OF_parent(devnode), "reg",
 						sizeof(*regp), (void **)&regp);
                         reg[0] = regp[0];
                         reg[1].mr_base = regp[1].mr_base;
diff --git a/sys/powerpc/powermac/uninorth.c b/sys/powerpc/powermac/uninorth.c
index 490277bebd8c..314b3f8949b8 100644
--- a/sys/powerpc/powermac/uninorth.c
+++ b/sys/powerpc/powermac/uninorth.c
@@ -164,10 +164,10 @@ unin_chip_add_intr(phandle_t devnode, struct unin_chip_devinfo *dinfo)
 		return;
 	}
 
-	nintr = OF_getprop_alloc(devnode, "interrupts", sizeof(*intr), 
+	nintr = OF_getprop_alloc_multi(devnode, "interrupts", sizeof(*intr), 
 		(void **)&intr);
 	if (nintr == -1) {
-		nintr = OF_getprop_alloc(devnode, "AAPL,interrupts", 
+		nintr = OF_getprop_alloc_multi(devnode, "AAPL,interrupts", 
 			sizeof(*intr), (void **)&intr);
 		if (nintr == -1)
 			return;
@@ -207,7 +207,7 @@ unin_chip_add_reg(phandle_t devnode, struct unin_chip_devinfo *dinfo)
 	struct	unin_chip_reg *reg;
 	int	i, nreg;
 
-	nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)&reg);
+	nreg = OF_getprop_alloc_multi(devnode, "reg", sizeof(*reg), (void **)&reg);
 	if (nreg == -1)
 		return;
 
diff --git a/sys/powerpc/psim/iobus.c b/sys/powerpc/psim/iobus.c
index 320d3a880b6d..a4c0d77d110e 100644
--- a/sys/powerpc/psim/iobus.c
+++ b/sys/powerpc/psim/iobus.c
@@ -221,7 +221,7 @@ iobus_attach(device_t dev)
         root = sc->sc_node;
 
         for (child = OF_child(root); child != 0; child = OF_peer(child)) {
-                OF_getprop_alloc(child, "name", 1, (void **)&name);
+                OF_getprop_alloc(child, "name", (void **)&name);
 
                 cdev = device_add_child(dev, NULL, -1);
                 if (cdev != NULL) {
diff --git a/sys/sparc64/central/central.c b/sys/sparc64/central/central.c
index c09373619aef..a376fd2bee20 100644
--- a/sys/sparc64/central/central.c
+++ b/sys/sparc64/central/central.c
@@ -140,7 +140,7 @@ central_attach(device_t dev)
 	sc = device_get_softc(dev);
 	node = ofw_bus_get_node(dev);
 
-	sc->sc_nrange = OF_getprop_alloc(node, "ranges",
+	sc->sc_nrange = OF_getprop_alloc_multi(node, "ranges",
 	    sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
 	if (sc->sc_nrange == -1) {
 		device_printf(dev, "can't get ranges\n");
@@ -153,7 +153,7 @@ central_attach(device_t dev)
 			free(cdi, M_DEVBUF);
 			continue;
 		}
-		nreg = OF_getprop_alloc(child, "reg", sizeof(*reg),
+		nreg = OF_getprop_alloc_multi(child, "reg", sizeof(*reg),
 		    (void **)&reg);
 		if (nreg == -1) {
 			device_printf(dev, "<%s>: incomplete\n",
diff --git a/sys/sparc64/ebus/ebus.c b/sys/sparc64/ebus/ebus.c
index e0edb7d068d9..df9e3c29d17f 100644
--- a/sys/sparc64/ebus/ebus.c
+++ b/sys/sparc64/ebus/ebus.c
@@ -292,7 +292,7 @@ ebus_nexus_attach(device_t dev)
 	}
 #endif
 
-	sc->sc_nrange = OF_getprop_alloc(node, "ranges",
+	sc->sc_nrange = OF_getprop_alloc_multi(node, "ranges",
 	    sizeof(struct ebus_nexus_ranges), &sc->sc_range);
 	if (sc->sc_nrange == -1) {
 		device_printf(dev, "could not get ranges property\n");
@@ -321,7 +321,7 @@ ebus_pci_attach(device_t dev)
 	pci_write_config(dev, PCIR_LATTIMER, 64 /* 64 PCI cycles */, 1);
 
 	node = ofw_bus_get_node(dev);
-	sc->sc_nrange = OF_getprop_alloc(node, "ranges",
+	sc->sc_nrange = OF_getprop_alloc_multi(node, "ranges",
 	    sizeof(struct isa_ranges), &sc->sc_range);
 	if (sc->sc_nrange == -1) {
 		device_printf(dev, "could not get ranges property\n");
@@ -660,7 +660,7 @@ ebus_setup_dinfo(device_t dev, struct ebus_softc *sc, phandle_t node)
 		return (NULL);
 	}
 	resource_list_init(&edi->edi_rl);
-	nreg = OF_getprop_alloc(node, "reg", sizeof(*regs), (void **)&regs);
+	nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*regs), (void **)&regs);
 	if (nreg == -1) {
 		device_printf(dev, "<%s>: incomplete\n",
 		    edi->edi_obdinfo.obd_name);
@@ -674,7 +674,7 @@ ebus_setup_dinfo(device_t dev, struct ebus_softc *sc, phandle_t node)
 	}
 	OF_prop_free(regs);
 
-	nintr = OF_getprop_alloc(node, "interrupts",  sizeof(*intrs),
+	nintr = OF_getprop_alloc_multi(node, "interrupts",  sizeof(*intrs),
 	    (void **)&intrs);
 	if (nintr == -1)
 		return (edi);
diff --git a/sys/sparc64/fhc/fhc.c b/sys/sparc64/fhc/fhc.c
index d55e2ddef698..cc858cfc9544 100644
--- a/sys/sparc64/fhc/fhc.c
+++ b/sys/sparc64/fhc/fhc.c
@@ -205,7 +205,7 @@ fhc_attach(device_t dev)
 	}
 
 	device_printf(dev, "board %d, ", board);
-	if (OF_getprop_alloc(node, "board-model", 1, (void **)&name) != -1) {
+	if (OF_getprop_alloc(node, "board-model", (void **)&name) != -1) {
 		printf("model %s\n", name);
 		OF_prop_free(name);
 	} else
@@ -227,7 +227,7 @@ fhc_attach(device_t dev)
 	bus_write_4(sc->sc_memres[FHC_INTERNAL], FHC_CTRL, ctrl);
 	(void)bus_read_4(sc->sc_memres[FHC_INTERNAL], FHC_CTRL);
 
-	sc->sc_nrange = OF_getprop_alloc(node, "ranges",
+	sc->sc_nrange = OF_getprop_alloc_multi(node, "ranges",
 	    sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
 	if (sc->sc_nrange == -1) {
 		device_printf(dev, "cannot get ranges\n");
@@ -285,7 +285,7 @@ fhc_attach(device_t dev)
 			free(fdi, M_DEVBUF);
 			continue;
 		}
-		i = OF_getprop_alloc(child, "reg", sizeof(*reg),
+		i = OF_getprop_alloc_multi(child, "reg", sizeof(*reg),
 		    (void **)&reg);
 		if (i == -1) {
 			device_printf(dev, "<%s>: incomplete\n",
@@ -301,7 +301,7 @@ fhc_attach(device_t dev)
 			    reg[j].sbr_size, reg[j].sbr_size);
 		OF_prop_free(reg);
 		if (central == 1) {
-			i = OF_getprop_alloc(child, "interrupts",
+			i = OF_getprop_alloc_multi(child, "interrupts",
 			    sizeof(*intr), (void **)&intr);
 			if (i != -1) {
 				for (j = 0; j < i; j++) {
diff --git a/sys/sparc64/isa/isa.c b/sys/sparc64/isa/isa.c
index f65bec484b63..f035ddc8c8d6 100644
--- a/sys/sparc64/isa/isa.c
+++ b/sys/sparc64/isa/isa.c
@@ -92,7 +92,7 @@ isa_init(device_t dev)
 	/* The parent of the bus must be a PCI-ISA bridge. */
 	bridge = device_get_parent(dev);
 	isab_node = ofw_bus_get_node(bridge);
-	isab_nrange = OF_getprop_alloc(isab_node, "ranges",
+	isab_nrange = OF_getprop_alloc_multi(isab_node, "ranges",
 	    sizeof(*isab_ranges), (void **)&isab_ranges);
 	if (isab_nrange <= 0)
 		panic("isa_init: cannot get bridge range property");
@@ -162,7 +162,7 @@ isa_setup_children(device_t dev, phandle_t parent)
 	 * allow for an isa_activate_resource().
 	 */
 	for (node = OF_child(parent); node != 0; node = OF_peer(node)) {
-		if ((OF_getprop_alloc(node, "name", 1, (void **)&name)) == -1)
+		if ((OF_getprop_alloc(node, "name", (void **)&name)) == -1)
 			continue;
 
 		/*
@@ -192,7 +192,7 @@ isa_setup_children(device_t dev, phandle_t parent)
 		isa_set_vendorid(cdev, ofw_isa_pnp_map[i].id);
 
 		rl = BUS_GET_RESOURCE_LIST(dev, cdev);
-		nreg = OF_getprop_alloc(node, "reg", sizeof(*regs),
+		nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*regs),
 		    (void **)&regs);
 		for (i = 0; i < nreg; i++) {
 			start = ISA_REG_PHYS(&regs[i]);
@@ -211,12 +211,12 @@ isa_setup_children(device_t dev, phandle_t parent)
 			 * the set of registers of the parent device like
 			 * with the nodes hanging off of the `8042' node.
 			 */
-			nregidx = OF_getprop_alloc(node, "reg", sizeof(*regidx),
+			nregidx = OF_getprop_alloc_multi(node, "reg", sizeof(*regidx),
 			    (void **)&regidx);
 			if (nregidx > 2)
 				panic("isa_setup_children: impossible number "
 				    "of register indices");
-			if (nregidx != -1 && (nreg = OF_getprop_alloc(parent,
+			if (nregidx != -1 && (nreg = OF_getprop_alloc_multi(parent,
 			    "reg", sizeof(*regs), (void **)&regs)) >= nregidx) {
 				for (i = 0; i < nregidx; i++) {
 					start = ISA_REG_PHYS(&regs[regidx[i]]);
@@ -237,7 +237,7 @@ isa_setup_children(device_t dev, phandle_t parent)
 		if (regs != NULL)
 			OF_prop_free(regs);
 
-		nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intrs),
+		nintr = OF_getprop_alloc_multi(node, "interrupts", sizeof(*intrs),
 		    (void **)&intrs);
 		for (i = 0; i < nintr; i++) {
 			if (intrs[i] > 7)
@@ -255,7 +255,7 @@ isa_setup_children(device_t dev, phandle_t parent)
 		if (intrs != NULL)
 			OF_prop_free(intrs);
 
-		ndrq = OF_getprop_alloc(node, "dma-channel", sizeof(*drqs),
+		ndrq = OF_getprop_alloc_multi(node, "dma-channel", sizeof(*drqs),
 		    (void **)&drqs);
 		for (i = 0; i < ndrq; i++)
 			bus_set_resource(cdev, SYS_RES_DRQ, i, drqs[i], 1);
diff --git a/sys/sparc64/pci/ofw_pci.c b/sys/sparc64/pci/ofw_pci.c
index 9c8b46bb5022..67b07b727cd6 100644
--- a/sys/sparc64/pci/ofw_pci.c
+++ b/sys/sparc64/pci/ofw_pci.c
@@ -93,7 +93,7 @@ ofw_pci_attach_common(device_t dev, bus_dma_tag_t dmat, u_long iosize,
 	 * start addresses of the ranges are the configuration, I/O and
 	 * memory handles.  There should not be multiple ones of one kind.
 	 */
-	nrange = OF_getprop_alloc(node, "ranges", sizeof(*range),
+	nrange = OF_getprop_alloc_multi(node, "ranges", sizeof(*range),
 	    (void **)&range);
 	for (i = 0; i < nrange; i++) {
 		j = OFW_PCI_RANGE_CS(&range[i]);
diff --git a/sys/sparc64/sbus/dma_sbus.c b/sys/sparc64/sbus/dma_sbus.c
index e93d2bbea211..7e4887e56e24 100644
--- a/sys/sparc64/sbus/dma_sbus.c
+++ b/sys/sparc64/sbus/dma_sbus.c
@@ -209,7 +209,7 @@ dma_attach(device_t dev)
 		 * the user can change it via a "media" option to ifconfig.
 		 */
 		csr = L64854_GCSR(lsc);
-		if ((OF_getprop_alloc(node, "cable-selection", 1,
+		if ((OF_getprop_alloc(node, "cable-selection",
 		    (void **)&cabletype)) == -1) {
 			/* assume TP if nothing there */
 			csr |= E_TP_AUI;
@@ -295,7 +295,7 @@ dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node)
 	}
 	resource_list_init(&ddi->ddi_rl);
 	slot = -1;
-	nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)&reg);
+	nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*reg), (void **)&reg);
 	if (nreg == -1) {
 		device_printf(dev, "<%s>: incomplete\n",
 		    ddi->ddi_obdinfo.obd_name);
@@ -329,7 +329,7 @@ dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node)
 	/*
 	 * The `interrupts' property contains the SBus interrupt level.
 	 */
-	nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr),
+	nintr = OF_getprop_alloc_multi(node, "interrupts", sizeof(*intr),
 	    (void **)&intr);
 	if (nintr != -1) {
 		for (i = 0; i < nintr; i++) {
diff --git a/sys/sparc64/sbus/sbus.c b/sys/sparc64/sbus/sbus.c
index 30c10fb4ef77..7731d97fb471 100644
--- a/sys/sparc64/sbus/sbus.c
+++ b/sys/sparc64/sbus/sbus.c
@@ -299,7 +299,7 @@ sbus_attach(device_t dev)
 	/*
 	 * Collect address translations from the OBP.
 	 */
-	if ((sc->sc_nrange = OF_getprop_alloc(node, "ranges",
+	if ((sc->sc_nrange = OF_getprop_alloc_multi(node, "ranges",
 	    sizeof(*range), (void **)&range)) == -1) {
 		panic("%s: error getting ranges property", __func__);
 	}
@@ -478,7 +478,7 @@ sbus_setup_dinfo(device_t dev, struct sbus_softc *sc, phandle_t node)
 	}
 	resource_list_init(&sdi->sdi_rl);
 	slot = -1;
-	nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)&reg);
+	nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*reg), (void **)&reg);
 	if (nreg == -1) {
 		if (sdi->sdi_obdinfo.obd_type == NULL ||
 		    strcmp(sdi->sdi_obdinfo.obd_type, "hierarchical") != 0) {
@@ -512,7 +512,7 @@ sbus_setup_dinfo(device_t dev, struct sbus_softc *sc, phandle_t node)
 	/*
 	 * The `interrupts' property contains the SBus interrupt level.
 	 */
-	nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr),
+	nintr = OF_getprop_alloc_multi(node, "interrupts", sizeof(*intr),
 	    (void **)&intr);
 	if (nintr != -1) {
 		for (i = 0; i < nintr; i++) {
diff --git a/sys/sparc64/sparc64/nexus.c b/sys/sparc64/sparc64/nexus.c
index 2c5ed92f8e5f..5075b02637a1 100644
--- a/sys/sparc64/sparc64/nexus.c
+++ b/sys/sparc64/sparc64/nexus.c
@@ -545,7 +545,7 @@ nexus_setup_dinfo(device_t dev, phandle_t node)
 		return (NULL);
 	}
 	resource_list_init(&ndi->ndi_rl);
-	nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)&reg);
+	nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*reg), (void **)&reg);
 	if (nreg == -1) {
 		device_printf(dev, "<%s>: incomplete\n",
 		    ndi->ndi_obdinfo.obd_name);
@@ -561,7 +561,7 @@ nexus_setup_dinfo(device_t dev, phandle_t node)
 	}
 	OF_prop_free(reg);
 
-	nintr = OF_getprop_alloc(node, "interrupts",  sizeof(*intr),
+	nintr = OF_getprop_alloc_multi(node, "interrupts",  sizeof(*intr),
 	    (void **)&intr);
 	if (nintr > 0) {
 		if (OF_getprop(node, PCPU_GET(impl) < CPU_IMPL_ULTRASPARCIII ?
diff --git a/sys/sparc64/sparc64/upa.c b/sys/sparc64/sparc64/upa.c
index 77c8c9401fcb..533cc148ccd1 100644
--- a/sys/sparc64/sparc64/upa.c
+++ b/sys/sparc64/sparc64/upa.c
@@ -285,7 +285,7 @@ upa_attach(device_t dev)
 		goto fail;
 	}
 
-	sc->sc_nrange = OF_getprop_alloc(node, "ranges", sizeof(*sc->sc_ranges),
+	sc->sc_nrange = OF_getprop_alloc_multi(node, "ranges", sizeof(*sc->sc_ranges),
 	    (void **)&sc->sc_ranges);
 	if (sc->sc_nrange == -1) {
 		device_printf(dev, "could not determine ranges\n");
@@ -553,7 +553,7 @@ upa_setup_dinfo(device_t dev, struct upa_softc *sc, phandle_t node,
 	}
 	resource_list_init(&udi->udi_rl);
 
-	nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)&reg);
+	nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*reg), (void **)&reg);
 	if (nreg == -1) {
 		device_printf(dev, "<%s>: incomplete\n",
 		    udi->udi_obdinfo.obd_name);