2 files changed, 13 insertions, 8 deletions

diff --git a/arch/sparc64/kernel/prom.c b/arch/sparc64/kernel/prom.c
index 13734b50a6e8..5e1fcd05160d 100644
--- a/arch/sparc64/kernel/prom.c
+++ b/arch/sparc64/kernel/prom.c
@@ -36,12 +36,13 @@ static struct device_node *allnodes;
  */
 static DEFINE_RWLOCK(devtree_lock);
 
-int of_device_is_compatible(struct device_node *device, const char *compat)
+int of_device_is_compatible(const struct device_node *device,
+                            const char *compat)
 {
         const char* cp;
         int cplen, l;
 
-        cp = (char *) of_get_property(device, "compatible", &cplen);
+        cp = of_get_property(device, "compatible", &cplen);
         if (cp == NULL)
                 return 0;
         while (cplen > 0) {
@@ -154,7 +155,8 @@ struct device_node *of_find_compatible_node(struct device_node *from,
 }
 EXPORT_SYMBOL(of_find_compatible_node);
 
-struct property *of_find_property(struct device_node *np, const char *name,
+struct property *of_find_property(const struct device_node *np,
+                                  const char *name,
                                   int *lenp)
 {
         struct property *pp;
@@ -174,7 +176,8 @@ EXPORT_SYMBOL(of_find_property);
  * Find a property with a given name for a given node
  * and return the value.
  */
-const void *of_get_property(struct device_node *np, const char *name, int *lenp)
+const void *of_get_property(const struct device_node *np, const char *name,
+                      int *lenp)
 {
         struct property *pp = of_find_property(np,name,lenp);
         return pp ? pp->value : NULL;
diff --git a/include/asm-sparc64/prom.h b/include/asm-sparc64/prom.h
index 50b03387c97b..6394bd1cdcd4 100644
--- a/include/asm-sparc64/prom.h
+++ b/include/asm-sparc64/prom.h
@@ -93,12 +93,14 @@ extern struct device_node *of_find_node_by_phandle(phandle handle);
 extern struct device_node *of_get_parent(const struct device_node *node);
 extern struct device_node *of_get_next_child(const struct device_node *node,
                                              struct device_node *prev);
-extern struct property *of_find_property(struct device_node *np,
+extern struct property *of_find_property(const struct device_node *np,
                                          const char *name,
                                          int *lenp);
-extern int of_device_is_compatible(struct device_node *device, const char *);
-extern const void *of_get_property(struct device_node *node, const char *name,
-                                   int *lenp);
+extern int of_device_is_compatible(const struct device_node *device,
+                                   const char *);
+extern const void *of_get_property(const struct device_node *node,
+                             const char *name,
+                             int *lenp);
 #define get_property(node,name,lenp) of_get_property(node,name,lenp)
 extern int of_set_property(struct device_node *node, const char *name, void *val, int len);
 extern int of_getintprop_default(struct device_node *np,