From 233872585de1cf26c3c3da5859ffb3aba45bd486 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Tue, 28 Mar 2017 10:52:26 +0300 Subject: device property: Add fwnode_get_next_parent() In order to differentiate the functionality between dropping a reference to the node (or not) for the benefit of OF, introduce fwnode_get_next_parent(). Signed-off-by: Sakari Ailus Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki --- drivers/base/property.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers') diff --git a/drivers/base/property.c b/drivers/base/property.c index 8a53b8f..627ebc9 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 * -- cgit v1.1