Consolidate of_get_parent

This requires creating dummy of_node_{get,put} routines for sparc and
sparc64.  It also adds a read_lock around the parent accesses.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: David S. Miller <davem@davemloft.net>

3 files changed, 0 insertions, 47 deletions

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 3f6238d96a5d..1ad56d3c6061 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1241,27 +1241,6 @@ struct device_node *of_find_all_nodes(struct device_node *prev)
 EXPORT_SYMBOL(of_find_all_nodes);
 
 /**
- *      of_get_parent - Get a node's parent if any
- *      @node:  Node to get parent
- *
- *      Returns a node pointer with refcount incremented, use
- *      of_node_put() on it when done.
- */
-struct device_node *of_get_parent(const struct device_node *node)
-{
-        struct device_node *np;
-
-        if (!node)
-                return NULL;
-
-        read_lock(&devtree_lock);
-        np = of_node_get(node->parent);
-        read_unlock(&devtree_lock);
-        return np;
-}
-EXPORT_SYMBOL(of_get_parent);
-
-/**
  *      of_get_next_child - Iterate a node childs
  *      @node:  parent node
  *      @prev:  previous child of the parent node, or NULL to get first
diff --git a/arch/sparc/kernel/prom.c b/arch/sparc/kernel/prom.c
index 0f5aab4326b3..b37871578087 100644
--- a/arch/sparc/kernel/prom.c
+++ b/arch/sparc/kernel/prom.c
@@ -29,19 +29,6 @@ static struct device_node *allnodes;
 
 extern rwlock_t devtree_lock;   /* temporary while merging */
 
-struct device_node *of_get_parent(const struct device_node *node)
-{
-        struct device_node *np;
-
-        if (!node)
-                return NULL;
-
-        np = node->parent;
-
-        return np;
-}
-EXPORT_SYMBOL(of_get_parent);
-
 struct device_node *of_get_next_child(const struct device_node *node,
         struct device_node *prev)
 {
diff --git a/arch/sparc64/kernel/prom.c b/arch/sparc64/kernel/prom.c
index a1ccc00c7958..2462731ac1a3 100644
--- a/arch/sparc64/kernel/prom.c
+++ b/arch/sparc64/kernel/prom.c
@@ -34,19 +34,6 @@ static struct device_node *allnodes;
 
 extern rwlock_t devtree_lock;   /* temporary while merging */
 
-struct device_node *of_get_parent(const struct device_node *node)
-{
-        struct device_node *np;
-
-        if (!node)
-                return NULL;
-
-        np = node->parent;
-
-        return np;
-}
-EXPORT_SYMBOL(of_get_parent);
-
 struct device_node *of_get_next_child(const struct device_node *node,
         struct device_node *prev)
 {