diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2017-05-24 17:53:55 +0300 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2017-06-01 08:50:49 -0500 |
| commit | d20dc1493db438fbbfb7733adc82f472dd8a0789 (patch) | |
| tree | a81ff52fe7e4ed471df24a2e1c48a7d25deb1fcd /include/linux/of.h | |
| parent | debd3a3b27c76c65a7d032b6f01710e6a6d555ab (diff) | |
| download | op-kernel-dev-d20dc1493db438fbbfb7733adc82f472dd8a0789.zip op-kernel-dev-d20dc1493db438fbbfb7733adc82f472dd8a0789.tar.gz | |
of: Support const and non-const use for to_of_node()
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>
Diffstat (limited to 'include/linux/of.h')
| -rw-r--r-- | include/linux/of.h | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index f05c87f..29b7b738b 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; } |
