drivers: of: add for_each_available_child_of_node() macro

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: I7713121fa18e780df480c5a5c6ebfa0972424f6f

diff --git a/include/linux/of.h b/include/linux/of.h
index 5e9d352..ff860fc 100644 (file)
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -290,6 +290,11 @@ extern int of_add_property(struct device_node *np, struct property *prop);
 extern int of_remove_property(struct device_node *np, struct property *prop);
 extern int of_update_property(struct device_node *np, struct property *newprop);
 
+#define for_each_available_child_of_node(parent, child) \
+       for (child = of_get_next_available_child(parent, NULL); child != NULL; \
+            child = of_get_next_available_child(parent, child))
+
+
 /* For updating the device tree at runtime */
 #define OF_RECONFIG_ATTACH_NODE                0x0001
 #define OF_RECONFIG_DETACH_NODE                0x0002