linux-kernel - Re: [PATCH 8/9] of/sparc: Remove sparc-local declaration of allnodes and devtree

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Date:	Sun, 14 Feb 2010 17:13:09 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Grant Likely <grant.likely@...retlab.ca>
Cc:	monstr@...str.eu, sfr@...b.auug.org.au, jeremy.kerr@...onical.com,
	davem@...emloft.net, microblaze-uclinux@...e.uq.edu.au,
	linuxppc-dev@...abs.org, sparclinux@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/9] of/sparc: Remove sparc-local declaration of
 allnodes and devtree_lock

On Sat, 2010-02-13 at 09:03 -0700, Grant Likely wrote:
> Both allnodes and devtree_lock are defined in common code.  The
> extern declaration should be in the common header too so that the
> compiler can type check.  allnodes is already in of.h, but
> devtree_lock should be declared there too.
> 
> This patch removes the SPARC declarations and uses decls in of.h instead.
> 
> Signed-off-by: Grant Likely <grant.likely@...retlab.ca>

Acked-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>

> ---
> 
>  arch/sparc/kernel/prom.h |    3 ---
>  include/linux/of.h       |    2 ++
>  2 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/sparc/kernel/prom.h b/arch/sparc/kernel/prom.h
> index 453397f..a8591ef 100644
> --- a/arch/sparc/kernel/prom.h
> +++ b/arch/sparc/kernel/prom.h
> @@ -4,9 +4,6 @@
>  #include <linux/spinlock.h>
>  #include <asm/prom.h>
>  
> -extern struct device_node *allnodes;	/* temporary while merging */
> -extern rwlock_t devtree_lock;	/* temporary while merging */
> -
>  extern void * prom_early_alloc(unsigned long size);
>  extern void irq_trans_init(struct device_node *dp);
>  
> diff --git a/include/linux/of.h b/include/linux/of.h
> index d34cc5d..f6d9cbc 100644
> --- a/include/linux/of.h
> +++ b/include/linux/of.h
> @@ -19,6 +19,7 @@
>  #include <linux/bitops.h>
>  #include <linux/kref.h>
>  #include <linux/mod_devicetable.h>
> +#include <linux/spinlock.h>
>  
>  #include <asm/byteorder.h>
>  
> @@ -67,6 +68,7 @@ struct device_node {
>  /* Pointer for first entry in chain of all nodes. */
>  extern struct device_node *allnodes;
>  extern struct device_node *of_chosen;
> +extern rwlock_t devtree_lock;
>  
>  static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
>  {
> 
> --
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