linux-kernel - Re: [PATCH 14/21] of: implement of_node_to

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Date:	Fri, 04 Oct 2013 11:33:50 +0100
From:	Grant Likely <grant.likely@...aro.org>
To:	Rob Herring <robherring2@...il.com>, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Cc:	Rob Herring <rob.herring@...xeda.com>
Subject: Re: [PATCH 14/21] of: implement of_node_to_nid as a weak function

On Thu, 26 Sep 2013 13:50:49 -0500, Rob Herring <robherring2@...il.com> wrote:
> From: Rob Herring <rob.herring@...xeda.com>
> 
> Implement of_node_to_nid as weak function to remove the dependency on
> asm/prom.h. This is in preparation to make prom.h optional.
> 
> Signed-off-by: Rob Herring <rob.herring@...xeda.com>

Acked-by: Grant Likely <grant.likely@...aro.org>

> ---
>  arch/powerpc/include/asm/prom.h |  7 -------
>  arch/sparc/include/asm/prom.h   |  4 ----
>  drivers/of/base.c               |  7 +++++++
>  include/linux/of.h              | 11 ++++-------
>  4 files changed, 11 insertions(+), 18 deletions(-)
> 
> diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
> index bd215f7..6707c16 100644
> --- a/arch/powerpc/include/asm/prom.h
> +++ b/arch/powerpc/include/asm/prom.h
> @@ -42,13 +42,6 @@ extern void kdump_move_device_tree(void);
>  /* cache lookup */
>  struct device_node *of_find_next_cache_node(struct device_node *np);
>  
> -#ifdef CONFIG_NUMA
> -extern int of_node_to_nid(struct device_node *device);
> -#else
> -static inline int of_node_to_nid(struct device_node *device) { return 0; }
> -#endif
> -#define of_node_to_nid of_node_to_nid
> -
>  extern void of_instantiate_rtc(void);
>  
>  extern int of_get_ibm_chip_id(struct device_node *np);
> diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h
> index 67c6257..60c8d7b 100644
> --- a/arch/sparc/include/asm/prom.h
> +++ b/arch/sparc/include/asm/prom.h
> @@ -43,10 +43,6 @@ extern int of_getintprop_default(struct device_node *np,
>  				 const char *name,
>  				 int def);
>  extern int of_find_in_proplist(const char *list, const char *match, int len);
> -#ifdef CONFIG_NUMA
> -extern int of_node_to_nid(struct device_node *dp);
> -#define of_node_to_nid of_node_to_nid
> -#endif
>  
>  extern void prom_build_devicetree(void);
>  extern void of_populate_present_mask(void);
> diff --git a/drivers/of/base.c b/drivers/of/base.c
> index 865d3f6..ced4c06 100644
> --- a/drivers/of/base.c
> +++ b/drivers/of/base.c
> @@ -74,6 +74,13 @@ int of_n_size_cells(struct device_node *np)
>  }
>  EXPORT_SYMBOL(of_n_size_cells);
>  
> +#ifdef CONFIG_NUMA
> +int __weak of_node_to_nid(struct device_node *np)
> +{
> +	return numa_node_id();
> +}
> +#endif
> +
>  #if defined(CONFIG_OF_DYNAMIC)
>  /**
>   *	of_node_get - Increment refcount of a node
> diff --git a/include/linux/of.h b/include/linux/of.h
> index f95aee3..4d294a0 100644
> --- a/include/linux/of.h
> +++ b/include/linux/of.h
> @@ -534,13 +534,10 @@ static inline const char *of_prop_next_string(struct property *prop,
>  #define of_match_node(_matches, _node)	NULL
>  #endif /* CONFIG_OF */
>  
> -#ifndef of_node_to_nid
> -static inline int of_node_to_nid(struct device_node *np)
> -{
> -	return numa_node_id();
> -}
> -
> -#define of_node_to_nid of_node_to_nid
> +#if defined(CONFIG_OF) && defined(CONFIG_NUMA)
> +extern int of_node_to_nid(struct device_node *np);
> +#else
> +static inline int of_node_to_nid(struct device_node *device) { return 0; }
>  #endif
>  
>  /**
> -- 
> 1.8.1.2
> 

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