diff --git a/include/asm-sparc/prom.h b/include/asm-sparc/prom.h
index 39ad2224a1172e80087e898e6bb971c46bd874c4..9ea105ebe2ffa1fdfefc2d65f86d38d587f5e77c 100644
--- a/include/asm-sparc/prom.h
+++ b/include/asm-sparc/prom.h
@@ -35,8 +35,8 @@ struct property {
 };
 
 struct device_node {
-	char	*name;
-	char	*type;
+	const char	*name;
+	const char	*type;
 	phandle	node;
 	char	*path_component_name;
 	char	*full_name;
diff --git a/include/asm-sparc64/prom.h b/include/asm-sparc64/prom.h
index 6394bd1cdcd4bdb311684cc9fd1a94175ab29e2c..ddad5f99ac7f0851ed630bd5a3d8f26d80c87b70 100644
--- a/include/asm-sparc64/prom.h
+++ b/include/asm-sparc64/prom.h
@@ -36,8 +36,8 @@ struct property {
 
 struct of_irq_controller;
 struct device_node {
-	char	*name;
-	char	*type;
+	const char	*name;
+	const char	*type;
 	phandle	node;
 	char	*path_component_name;
 	char	*full_name;