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| author | Frank Rowand <frowand.list@gmail.com> | 2023-02-13 12:57:02 -0600 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2023-02-20 15:37:19 -0600 |
| commit | d9194e009efef9613f48022f3c885191c48120f9 (patch) | |
| tree | 12609eee961b9c7845c0d8173271db84422f4829 /include/linux/of.h | |
| parent | ec0b7e24d566a843e3cfba21a6471170fdb0f810 (diff) | |
of: dynamic: add lifecycle docbook info to node creation functions
The existing docbook comments for the functions related to creating
a devicetree node do not explain the reference count of a newly
created node, how decrementing the reference count to zero will
free the associated memory, and the caller's responsibility to
call of_node_put() on the node. Explain what happens when the
reference count is decremented to zero.
Signed-off-by: Frank Rowand <frowand.list@gmail.com>
Link: https://lore.kernel.org/r/20230213185702.395776-8-frowand.list@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'include/linux/of.h')
| -rw-r--r-- | include/linux/of.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index 37afd04f36eb..1cb659e682f5 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -100,6 +100,17 @@ struct of_reconfig_data { struct property *old_prop; }; +/** + * of_node_init - initialize a devicetree node + * @node: Pointer to device node that has been created by kzalloc() + * @phandle_name: Name of property holding a phandle value + * + * On return the device_node refcount is set to one. Use of_node_put() + * on @node when done to free the memory allocated for it. If the node + * is NOT a dynamic node the memory will not be freed. The decision of + * whether to free the memory will be done by node->release(), which is + * of_node_release(). + */ /* initialize a node */ extern const struct kobj_type of_node_ktype; extern const struct fwnode_operations of_fwnode_ops; |