On Fri, Aug 16, 2019 at 1:45 PM Heikki Krogerus
<heikki.kroge...@linux.intel.com> wrote:
>
> Function that searches software nodes by node name.
>
FWIW,
Reviewed-by: Andy Shevchenko <andy.shevche...@gmail.com>
> Signed-off-by: Heikki Krogerus <heikki.kroge...@linux.intel.com>
> Reviewed-by: Hans de Goede <hdego...@redhat.com>
> Tested-by: Hans de Goede <hdego...@redhat.com>
> ---
> drivers/base/swnode.c | 37 +++++++++++++++++++++++++++++++++++++
> include/linux/property.h | 4 ++++
> 2 files changed, 41 insertions(+)
>
> diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
> index e7b3aa3bd55a..ee2a405cca9a 100644
> --- a/drivers/base/swnode.c
> +++ b/drivers/base/swnode.c
> @@ -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)
> diff --git a/include/linux/property.h b/include/linux/property.h
> index 5a910ad79591..9b3d4ca3a73a 100644
> --- a/include/linux/property.h
> +++ b/include/linux/property.h
> @@ -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);
>
> --
> 2.23.0.rc1
>
--
With Best Regards,
Andy Shevchenko
