device property: Constify device child node APIs

The device parameter is not altered in the device child node APIs,
constify them.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20221004092129.19412-5-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/property.c b/drivers/base/property.c
index 58b8158add5c897e3308b57118f7ee4bc80205b5..d3ea5f82978f38736908763189fda8de0bda7d2d 100644 (file)
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -763,7 +763,7 @@ EXPORT_SYMBOL_GPL(fwnode_get_next_available_child_node);
  * @dev: Device to find the next child node for.
  * @child: Handle to one of the device's child nodes or a null handle.
  */
-struct fwnode_handle *device_get_next_child_node(struct device *dev,
+struct fwnode_handle *device_get_next_child_node(const struct device *dev,
                                                 struct fwnode_handle *child)
 {
        const struct fwnode_handle *fwnode = dev_fwnode(dev);
@@ -800,7 +800,7 @@ EXPORT_SYMBOL_GPL(fwnode_get_named_child_node);
  * @dev: Device to find the named child node for.
  * @childname: String to match child node name against.
  */
-struct fwnode_handle *device_get_named_child_node(struct device *dev,
+struct fwnode_handle *device_get_named_child_node(const struct device *dev,
                                                  const char *childname)
 {
        return fwnode_get_named_child_node(dev_fwnode(dev), childname);
@@ -859,7 +859,7 @@ EXPORT_SYMBOL_GPL(fwnode_device_is_available);
  * device_get_child_node_count - return the number of child nodes for device
  * @dev: Device to cound the child nodes for
  */
-unsigned int device_get_child_node_count(struct device *dev)
+unsigned int device_get_child_node_count(const struct device *dev)
 {
        struct fwnode_handle *child;
        unsigned int count = 0;

diff --git a/include/linux/property.h b/include/linux/property.h
index 7abb1792044f7935599b1caa5eea7c9c7a7e8f82..472689e53ade53f331ddb7db9ed28885f9a6ae93 100644 (file)
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -114,16 +114,16 @@ struct fwnode_handle *fwnode_get_next_available_child_node(
        for (child = fwnode_get_next_available_child_node(fwnode, NULL); child;\
             child = fwnode_get_next_available_child_node(fwnode, child))
 
-struct fwnode_handle *device_get_next_child_node(
-       struct device *dev, struct fwnode_handle *child);
+struct fwnode_handle *device_get_next_child_node(const struct device *dev,
+                                                struct fwnode_handle *child);
 
 #define device_for_each_child_node(dev, child)                         \
        for (child = device_get_next_child_node(dev, NULL); child;      \
             child = device_get_next_child_node(dev, child))
 
-struct fwnode_handle *fwnode_get_named_child_node(
-       const struct fwnode_handle *fwnode, const char *childname);
-struct fwnode_handle *device_get_named_child_node(struct device *dev,
+struct fwnode_handle *fwnode_get_named_child_node(const struct fwnode_handle *fwnode,
+                                                 const char *childname);
+struct fwnode_handle *device_get_named_child_node(const struct device *dev,
                                                  const char *childname);
 
 struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
@@ -132,7 +132,7 @@ void fwnode_handle_put(struct fwnode_handle *fwnode);
 int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index);
 int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name);
 
-unsigned int device_get_child_node_count(struct device *dev);
+unsigned int device_get_child_node_count(const struct device *dev);
 
 static inline bool device_property_read_bool(struct device *dev,
                                             const char *propname)