diff --git a/sys/compat/linuxkpi/common/include/linux/platform_device.h b/sys/compat/linuxkpi/common/include/linux/platform_device.h
--- a/sys/compat/linuxkpi/common/include/linux/platform_device.h
+++ b/sys/compat/linuxkpi/common/include/linux/platform_device.h
@@ -34,6 +34,9 @@
 #include <linux/device.h>
 
 struct platform_device {
+	const char			*name;
+	int				id;
+	bool				id_auto;
 	struct device			dev;
 };
 
@@ -78,6 +81,13 @@
 	return;
 }
 
+static __inline int
+platform_device_register(struct platform_device *pdev)
+{
+	pr_debug("%s: TODO\n", __func__);
+	return (0);
+}
+
 static __inline void
 platform_device_unregister(struct platform_device *pdev)
 {