diff options
| -rw-r--r-- | drivers/base/property.c | 21 | ||||
| -rw-r--r-- | include/linux/property.h | 1 |
2 files changed, 22 insertions, 0 deletions
diff --git a/drivers/base/property.c b/drivers/base/property.c index 8a53b8f1db66..627ebc9b570d 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -934,6 +934,27 @@ int device_add_properties(struct device *dev, EXPORT_SYMBOL_GPL(device_add_properties); /** + * fwnode_get_next_parent - Iterate to the node's parent + * @fwnode: Firmware whose parent is retrieved + * + * This is like fwnode_get_parent() except that it drops the refcount + * on the passed node, making it suitable for iterating through a + * node's parents. + * + * Returns a node pointer with refcount incremented, use + * fwnode_handle_node() on it when done. + */ +struct fwnode_handle *fwnode_get_next_parent(struct fwnode_handle *fwnode) +{ + struct fwnode_handle *parent = fwnode_get_parent(fwnode); + + fwnode_handle_put(fwnode); + + return parent; +} +EXPORT_SYMBOL_GPL(fwnode_get_next_parent); + +/** * fwnode_get_parent - Return parent firwmare node * @fwnode: Firmware whose parent is retrieved * diff --git a/include/linux/property.h b/include/linux/property.h index 3a4e43599e01..2f482616a2f2 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -73,6 +73,7 @@ int fwnode_property_match_string(struct fwnode_handle *fwnode, const char *propname, const char *string); struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode); +struct fwnode_handle *fwnode_get_next_parent(struct fwnode_handle *fwnode); struct fwnode_handle *fwnode_get_next_child_node(struct fwnode_handle *fwnode, struct fwnode_handle *child); |