From: Michael Ellerman <michael@ellerman.id.au>
Date: Mon, 26 Nov 2007 08:03:45 +0000 (+1100)
Subject: [POWERPC] Add for_each_child_of_node() helper for iterating over child nodes
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=aabc08dc662b7acb17ca5706533253ce10c050b1;p=deliverable%2Flinux.git

[POWERPC] Add for_each_child_of_node() helper for iterating over child nodes

Add for_each_child_of_node() to encapsulate the common idiom of
iterating over the children of a device_node.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/include/linux/of.h b/include/linux/of.h
index 5c39b9270ff7..c65af7bd1e9c 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -46,6 +46,10 @@ 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);
+#define for_each_child_of_node(parent, child) \
+	for (child = of_get_next_child(parent, NULL); child != NULL; \
+	     child = of_get_next_child(parent, child))
+
 extern struct property *of_find_property(const struct device_node *np,
 					 const char *name,
 					 int *lenp);