diff --git a/arch/arm/mach-lpc32xx/include/mach/gpio.h b/arch/arm/mach-lpc32xx/include/mach/gpio.h
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..40a8c178f10d9e85a2873c83247c3f2fe553f408 100644
--- a/arch/arm/mach-lpc32xx/include/mach/gpio.h
+++ b/arch/arm/mach-lpc32xx/include/mach/gpio.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/arch/arm/mach-tegra/include/mach/gpio.h b/arch/arm/mach-tegra/include/mach/gpio.h
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..40a8c178f10d9e85a2873c83247c3f2fe553f408 100644
--- a/arch/arm/mach-tegra/include/mach/gpio.h
+++ b/arch/arm/mach-tegra/include/mach/gpio.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/arch/arm/mach-u300/include/mach/gpio.h b/arch/arm/mach-u300/include/mach/gpio.h
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..40a8c178f10d9e85a2873c83247c3f2fe553f408 100644
--- a/arch/arm/mach-u300/include/mach/gpio.h
+++ b/arch/arm/mach-u300/include/mach/gpio.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/arch/arm/mach-vexpress/include/mach/gpio.h b/arch/arm/mach-vexpress/include/mach/gpio.h
new file mode 100644
index 0000000000000000000000000000000000000000..40a8c178f10d9e85a2873c83247c3f2fe553f408
--- /dev/null
+++ b/arch/arm/mach-vexpress/include/mach/gpio.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/include/linux/of.h b/include/linux/of.h
index 92c40a14224350ec2a24d9f158d0340e5bd17cfb..5dbe263462a94611518ebb81482d164ce5469d5d 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -17,6 +17,7 @@
  */
 #include <linux/types.h>
 #include <linux/bitops.h>
+#include <linux/errno.h>
 #include <linux/kref.h>
 #include <linux/mod_devicetable.h>
 #include <linux/spinlock.h>