OF: base: import of_find_node_with_property from Linux OF API

This imports of_find_node_with_property and corresponding helpers
from Linux OF API.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 490d2dbbd2..50153b5908 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -368,6 +368,32 @@ struct device_node *of_find_compatible_node(struct device_node *from,
 EXPORT_SYMBOL(of_find_compatible_node);
 
 /**
+ *	of_find_node_with_property - Find a node which has a property with
+ *                                   the given name.
+ *	@from:		The node to start searching from or NULL, the node
+ *			you pass will not be searched, only the next one
+ *			will; typically, you pass what the previous call
+ *			returned.
+ *	@prop_name:	The name of the property to look for.
+ *
+ *	Returns a pointer to the node found or NULL.
+ */
+struct device_node *of_find_node_with_property(struct device_node *from,
+	const char *prop_name)
+{
+	struct device_node *np;
+
+	of_tree_for_each_node(np, from) {
+		struct property *pp = of_find_property(np, prop_name, NULL);
+		if (pp)
+			return np;
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL(of_find_node_with_property);
+
+/**
  * of_match_node - Tell if an device_node has a matching of_match structure
  *      @matches:       array of of device match structures to search in
  *      @node:          the of device structure to match against