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Commit 1666faed authored by Heikki Krogerus's avatar Heikki Krogerus Committed by Rafael J. Wysocki
Browse files

software node: Add software_node_find_by_name() 



Function that searches software nodes by node name.

Signed-off-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Tested-by: default avatarHans de Goede <hdegoede@redhat.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent a55aa89a

drivers/base/swnode.c

+37 −0
Original line number Diff line number Diff line
@@ -620,6 +620,43 @@ static const struct fwnode_operations software_node_ops = { 


/* -------------------------------------------------------------------------- */



/**

 * software_node_find_by_name - Find software node by name

 * @parent: Parent of the software node

 * @name: Name of the software node

 *

 * The function will find a node that is child of @parent and that is named

 * @name. If no node is found, the function returns NULL.

 *

 * NOTE: you will need to drop the reference with fwnode_handle_put() after use.

 */

const struct software_node *

software_node_find_by_name(const struct software_node *parent, const char *name)

{

	struct swnode *swnode;

	struct kobject *k;



	if (!name)

		return NULL;



	spin_lock(&swnode_kset->list_lock);



	list_for_each_entry(k, &swnode_kset->list, entry) {

		swnode = kobj_to_swnode(k);

		if (parent == swnode->node->parent && swnode->node->name &&

		    !strcmp(name, swnode->node->name)) {

			kobject_get(&swnode->kobj);

			break;

		}

		swnode = NULL;

	}



	spin_unlock(&swnode_kset->list_lock);



	return swnode ? swnode->node : NULL;

}

EXPORT_SYMBOL_GPL(software_node_find_by_name);



static int

software_node_register_properties(struct software_node *node,

				  const struct property_entry *properties)

include/linux/property.h

+4 −0
Original line number Diff line number Diff line
@@ -421,6 +421,10 @@ bool is_software_node(const struct fwnode_handle *fwnode); 
const struct software_node *to_software_node(struct fwnode_handle *fwnode);

struct fwnode_handle *software_node_fwnode(const struct software_node *node);



const struct software_node *

software_node_find_by_name(const struct software_node *parent,

			   const char *name);



int software_node_register_nodes(const struct software_node *nodes);

void software_node_unregister_nodes(const struct software_node *nodes);