Subject: Re: [PATCH 2/3] of: dynamic: add of_node_alloc() and of_node_free()

From: Rob Herring <[email-masked]>
Date: Thu, 5 May 2022 14:43:54 -0500

On Wed, May 04, 2022 at 05:40:32PM +0200, Clément Léger wrote:
> Add functions which allows to create and free nodes.
> 
> Signed-off-by: Clément Léger <[email-masked]>
> ---
>  drivers/of/dynamic.c | 59 ++++++++++++++++++++++++++++++++++++--------
>  include/linux/of.h   |  9 +++++++
>  2 files changed, 58 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
> index e8700e509d2e..ec28e5ba2969 100644
> --- a/drivers/of/dynamic.c
> +++ b/drivers/of/dynamic.c
> @@ -455,6 +455,54 @@ struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags)
>  				 prop->length, allocflags);
>  }
>  
> +/**
> + * of_node_free - Free a node allocated dynamically.
> + * @node:	Node to be freed
> + */
> +void of_node_free(const struct device_node *node)
> +{
> +	kfree(node->full_name);
> +	kfree(node->data);
> +	kfree(node);
> +}
> +EXPORT_SYMBOL(of_node_free);

This shouldn't be needed. Nodes are refcounted, so any caller should 
just do a put.

Rob