Re: [PATCH] of: introduce of_get_available_child_count

[Rob Herring <robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On 09/24/2013 12:50 PM, Bryan Wu wrote:
> Some drivers keep counting available child by themselves. So
> introduce a new simple API like of_get_child_count() but for
> available childs.
> 
> Cc: Josh Wu <josh.wu-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
> Signed-off-by: Bryan Wu <cooloney-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---

Acked-by: Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>

I assume you have some user and will take this dependency thru that tree?

>  include/linux/of.h | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/include/linux/of.h b/include/linux/of.h
> index f95aee3..54c2560 100644
> --- a/include/linux/of.h
> +++ b/include/linux/of.h
> @@ -226,6 +226,17 @@ static inline int of_get_child_count(const struct device_node *np)
>  	return num;
>  }
>  
> +static inline int of_get_available_child_count(const struct device_node *np)
> +{
> +	struct device_node *child;
> +	int num = 0;
> +
> +	for_each_available_child_of_node(np, child)
> +		num++;
> +
> +	return num;
> +}
> +
>  extern struct device_node *of_find_node_with_property(
>  	struct device_node *from, const char *prop_name);
>  #define for_each_node_with_property(dn, prop_name) \
> @@ -376,6 +387,11 @@ static inline int of_get_child_count(const struct device_node *np)
>  	return 0;
>  }
>  
> +static inline int of_get_available_child_count(const struct device_node *np)
> +{
> +	return 0;
> +}
> +
>  static inline int of_device_is_compatible(const struct device_node *device,
>  					  const char *name)
>  {
> 

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html