From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Wed, 24 May 2017 17:53:55 +0300
Subject: of: Support const and non-const use for to_of_node()
Git-commit: d20dc1493db438fbbfb7733adc82f472dd8a0789
Patch-mainline: v4.13-rc1
References: fate#326250
Turn to_of_node() into a macro in order to support both const and
non-const use. Additionally make the fwnode argument to is_of_node() const
as well.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
include/linux/of.h | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/include/linux/of.h b/include/linux/of.h
index f05c87f0c495..29b7b738b509 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -148,16 +148,20 @@ extern raw_spinlock_t devtree_lock;
#ifdef CONFIG_OF
void of_core_init(void);
-static inline bool is_of_node(struct fwnode_handle *fwnode)
+static inline bool is_of_node(const struct fwnode_handle *fwnode)
{
return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_OF;
}
-static inline struct device_node *to_of_node(struct fwnode_handle *fwnode)
-{
- return is_of_node(fwnode) ?
- container_of(fwnode, struct device_node, fwnode) : NULL;
-}
+#define to_of_node(__fwnode) \
+ ({ \
+ typeof(__fwnode) __to_of_node_fwnode = (__fwnode); \
+ \
+ is_of_node(__to_of_node_fwnode) ? \
+ container_of(__to_of_node_fwnode, \
+ struct device_node, fwnode) : \
+ NULL; \
+ })
#define of_fwnode_handle(node) \
({ \
@@ -539,12 +543,12 @@ static inline void of_core_init(void)
{
}
-static inline bool is_of_node(struct fwnode_handle *fwnode)
+static inline bool is_of_node(const struct fwnode_handle *fwnode)
{
return false;
}
-static inline struct device_node *to_of_node(struct fwnode_handle *fwnode)
+static inline struct device_node *to_of_node(const struct fwnode_handle *fwnode)
{
return NULL;
}
--
2.19.1