Commit e7887c28 authored by Sakari Ailus's avatar Sakari Ailus Committed by Rafael J. Wysocki
Browse files

device property: Add fwnode_handle_get() 



fwnode_handle_get() is used to obtain a reference to a fwnode_handle
container. In this case this is OF specific struct device_node.

This complements fwnode_handle_put() which is already implemented.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 07bb80d4

drivers/base/property.c

+11 −0
Original line number Diff line number Diff line
@@ -1040,6 +1040,17 @@ struct fwnode_handle *device_get_named_child_node(struct device *dev, 
}

EXPORT_SYMBOL_GPL(device_get_named_child_node);



/**

 * fwnode_handle_get - Obtain a reference to a device node

 * @fwnode: Pointer to the device node to obtain the reference to.

 */

void fwnode_handle_get(struct fwnode_handle *fwnode)

{

	if (is_of_node(fwnode))

		of_node_get(to_of_node(fwnode));

}

EXPORT_SYMBOL_GPL(fwnode_handle_get);



/**

 * fwnode_handle_put - Drop reference to a device node

 * @fwnode: Pointer to the device node to drop the reference to.

include/linux/property.h

+1 −0
Original line number Diff line number Diff line
@@ -90,6 +90,7 @@ struct fwnode_handle *fwnode_get_named_child_node(struct fwnode_handle *fwnode, 
struct fwnode_handle *device_get_named_child_node(struct device *dev,

						  const char *childname);



void fwnode_handle_get(struct fwnode_handle *fwnode);

void fwnode_handle_put(struct fwnode_handle *fwnode);



unsigned int device_get_child_node_count(struct device *dev);