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)
 {