diff --git a/MAINTAINERS b/MAINTAINERS
index d5e4ff328cc7..21c038f216e3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -783,7 +783,7 @@ F:	arch/arm/boot/dts/sama*.dts
 F:	arch/arm/boot/dts/sama*.dtsi
 
 ARM/CALXEDA HIGHBANK ARCHITECTURE
-M:	Rob Herring <rob.herring@calxeda.com>
+M:	Rob Herring <robh@kernel.org>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/mach-highbank/
@@ -6256,7 +6256,7 @@ F:	drivers/i2c/busses/i2c-ocores.c
 
 OPEN FIRMWARE AND FLATTENED DEVICE TREE
 M:	Grant Likely <grant.likely@linaro.org>
-M:	Rob Herring <rob.herring@calxeda.com>
+M:	Rob Herring <robh+dt@kernel.org>
 L:	devicetree@vger.kernel.org
 W:	http://fdt.secretlab.ca
 T:	git git://git.secretlab.ca/git/linux-2.6.git
@@ -6268,7 +6268,7 @@ K:	of_get_property
 K:	of_match_table
 
 OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS
-M:	Rob Herring <rob.herring@calxeda.com>
+M:	Rob Herring <robh+dt@kernel.org>
 M:	Pawel Moll <pawel.moll@arm.com>
 M:	Mark Rutland <mark.rutland@arm.com>
 M:	Ian Campbell <ijc+devicetree@hellion.org.uk>
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index de6f8990246f..c6973f101a3e 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -20,7 +20,7 @@ config OF_SELFTEST
 	depends on OF_IRQ
 	help
 	  This option builds in test cases for the device tree infrastructure
-	  that are executed one at boot time, and the results dumped to the
+	  that are executed once at boot time, and the results dumped to the
 	  console.
 
 	  If unsure, say N here, but this option is safe to enable.
diff --git a/drivers/of/address.c b/drivers/of/address.c
index 4b9317bdb81c..d3dd41c840f1 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -69,14 +69,6 @@ static u64 of_bus_default_map(__be32 *addr, const __be32 *range,
 		 (unsigned long long)cp, (unsigned long long)s,
 		 (unsigned long long)da);
 
-	/*
-	 * If the number of address cells is larger than 2 we assume the
-	 * mapping doesn't specify a physical address. Rather, the address
-	 * specifies an identifier that must match exactly.
-	 */
-	if (na > 2 && memcmp(range, addr, na * 4) != 0)
-		return OF_BAD_ADDR;
-
 	if (da < cp || da >= (cp + s))
 		return OF_BAD_ADDR;
 	return da - cp;
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 2fa024b97c43..758b4f8b30b7 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -922,8 +922,16 @@ void __init unflatten_device_tree(void)
  */
 void __init unflatten_and_copy_device_tree(void)
 {
-	int size = __be32_to_cpu(initial_boot_params->totalsize);
-	void *dt = early_init_dt_alloc_memory_arch(size,
+	int size;
+	void *dt;
+
+	if (!initial_boot_params) {
+		pr_warn("No valid device tree found, continuing without\n");
+		return;
+	}
+
+	size = __be32_to_cpu(initial_boot_params->totalsize);
+	dt = early_init_dt_alloc_memory_arch(size,
 		__alignof__(struct boot_param_header));
 
 	if (dt) {
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 786b0b47fae4..27212402c532 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -165,7 +165,6 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
 		if (of_get_property(ipar, "interrupt-controller", NULL) !=
 				NULL) {
 			pr_debug(" -> got it !\n");
-			of_node_put(old);
 			return 0;
 		}
 
@@ -250,8 +249,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
 		 * Successfully parsed an interrrupt-map translation; copy new
 		 * interrupt specifier into the out_irq structure
 		 */
-		of_node_put(out_irq->np);
-		out_irq->np = of_node_get(newpar);
+		out_irq->np = newpar;
 
 		match_array = imap - newaddrsize - newintsize;
 		for (i = 0; i < newintsize; i++)
@@ -268,7 +266,6 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
 	}
  fail:
 	of_node_put(ipar);
-	of_node_put(out_irq->np);
 	of_node_put(newpar);
 
 	return -EINVAL;