[PATCH v3 08/16] of: Add of_fwnode_handle() to convert device nodes to fwnode_handle

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of_fwnode_handle() returns a struct fwnode_handle of the struct
device_node. This may be used on the fwnode property API.

Use a macro instead of a function in order to support const and non-const
arguments.

Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
 include/linux/of.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/of.h b/include/linux/of.h
index d72f010..55eee5d 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -159,6 +159,8 @@ static inline struct device_node *to_of_node(struct fwnode_handle *fwnode)
 		container_of(fwnode, struct device_node, fwnode) : NULL;
 }
 
+#define of_fwnode_handle(node) (&(node)->fwnode)
+
 static inline bool of_have_populated_dt(void)
 {
 	return of_root != NULL;
@@ -601,6 +603,8 @@ static inline struct device_node *of_find_node_with_property(
 	return NULL;
 }
 
+#define of_fwnode_handle(node) NULL
+
 static inline bool of_have_populated_dt(void)
 {
 	return false;
-- 
2.7.4

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