[PATCH RFC 04/13] OF: make a function pointer argument const

[Sylwester Nawrocki]

From: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>

The "struct device_node *" argument of of_parse_phandle_*() can be const.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
 drivers/of/base.c  |    4 ++--
 include/linux/of.h |    6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index af3b22a..c180205 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -894,7 +894,7 @@ EXPORT_SYMBOL_GPL(of_property_count_strings);
  * of_node_put() on it when done.
  */
 struct device_node *
-of_parse_phandle(struct device_node *np, const char *phandle_name, int index)
+of_parse_phandle(const struct device_node *np, const char *phandle_name, int index)
 {
 	const __be32 *phandle;
 	int size;
@@ -939,7 +939,7 @@ EXPORT_SYMBOL(of_parse_phandle);
  * To get a device_node of the `node2' node you may call this:
  * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args);
  */
-int of_parse_phandle_with_args(struct device_node *np, const char *list_name,
+int of_parse_phandle_with_args(const struct device_node *np, const char *list_name,
 				const char *cells_name, int index,
 				struct of_phandle_args *out_args)
 {
diff --git a/include/linux/of.h b/include/linux/of.h
index 38d4b1a..2fb0dbe 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -256,10 +256,10 @@ extern int of_n_size_cells(struct device_node *np);
 extern const struct of_device_id *of_match_node(
 	const struct of_device_id *matches, const struct device_node *node);
 extern int of_modalias_node(struct device_node *node, char *modalias, int len);
-extern struct device_node *of_parse_phandle(struct device_node *np,
+extern struct device_node *of_parse_phandle(const struct device_node *np,
 					    const char *phandle_name,
 					    int index);
-extern int of_parse_phandle_with_args(struct device_node *np,
+extern int of_parse_phandle_with_args(const struct device_node *np,
 	const char *list_name, const char *cells_name, int index,
 	struct of_phandle_args *out_args);
 
@@ -412,7 +412,7 @@ static inline int of_property_match_string(struct device_node *np,
 	return -ENOSYS;
 }
 
-static inline struct device_node *of_parse_phandle(struct device_node *np,
+static inline struct device_node *of_parse_phandle(const struct device_node *np,
 						   const char *phandle_name,
 						   int index)
 {
-- 
1.7.9.5

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