[PATCH 1/2] of: simplify phandle lookup

[Jan Luebbe]

From: Sascha Hauer <s.hauer at pengutronix.de>

Instead of populating an extra list containing all phandles just iterate
over the whole tree. This is done as preparation for more dynamic devicetrees
where parts are loaded at runtime. Here we don't want to keep the list of
phandles in sync.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/of/base.c | 11 +++--------
 include/of.h      |  1 -
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 116dd0c..ba929bc 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -67,8 +67,6 @@ struct alias_prop {
 
 static LIST_HEAD(aliases_lookup);
 
-static LIST_HEAD(phandle_list);
-
 struct device_node *root_node;
 
 struct device_node *of_aliases;
@@ -274,9 +272,10 @@ struct device_node *of_find_node_by_phandle(phandle phandle)
 {
 	struct device_node *node;
 
-	list_for_each_entry(node, &phandle_list, phandles)
+	of_tree_for_each_node_from(node, root_node)
 		if (node->phandle == phandle)
 			return node;
+
 	return NULL;
 }
 EXPORT_SYMBOL(of_find_node_by_phandle);
@@ -1719,7 +1718,7 @@ const struct of_device_id of_default_bus_match_table[] = {
 
 int of_probe(void)
 {
-	struct device_node *memory, *node;
+	struct device_node *memory;
 
 	if(!root_node)
 		return -ENODEV;
@@ -1730,10 +1729,6 @@ int of_probe(void)
 	if (of_model)
 		barebox_set_model(of_model);
 
-	of_tree_for_each_node_from(node, root_node)
-		if (node->phandle)
-			list_add_tail(&node->phandles, &phandle_list);
-
 	memory = of_find_node_by_path("/memory");
 	if (memory)
 		of_add_memory(memory, false);
diff --git a/include/of.h b/include/of.h
index e5cd750..3381e69 100644
--- a/include/of.h
+++ b/include/of.h
@@ -30,7 +30,6 @@ struct device_node {
 	struct list_head children;
 	struct list_head parent_list;
 	struct list_head list;
-	struct list_head phandles;
 	phandle phandle;
 };
 
-- 
1.8.4.rc3