linux-kernel - Re: [PATCH] powerpc: Export cpu_to_chip

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Date:	Wed, 11 Sep 2013 08:03:30 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Paul Mackerras <paulus@...ba.org>,
	Vasant Hegde <hegdevasant@...ux.vnet.ibm.com>,
	Shivaprasad G Bhat <sbhat@...ux.vnet.ibm.com>
Subject: Re: [PATCH] powerpc: Export cpu_to_chip_id() to fix build error

On Mon, 2013-09-09 at 18:37 -0700, Guenter Roeck wrote:
> powerpc allmodconfig build fails with:
> 
> ERROR: ".cpu_to_chip_id" [drivers/block/mtip32xx/mtip32xx.ko] undefined!
> 
> The problem was introduced with commit 15863ff3b (powerpc: Make chip-id
> information available to userspace).

Thanks, I'll send that to Linus asap.

Ben.

> Export the missing symbol.
> 
> Cc: Vasant Hegde <hegdevasant@...ux.vnet.ibm.com>
> Cc: Shivaprasad G Bhat <sbhat@...ux.vnet.ibm.com>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> ---
>  arch/powerpc/kernel/smp.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
> index 442d8e2..8e59abc 100644
> --- a/arch/powerpc/kernel/smp.c
> +++ b/arch/powerpc/kernel/smp.c
> @@ -611,6 +611,7 @@ int cpu_to_chip_id(int cpu)
>  	of_node_put(np);
>  	return of_get_ibm_chip_id(np);
>  }
> +EXPORT_SYMBOL(cpu_to_chip_id);
>  
>  /* Helper routines for cpu to core mapping */
>  int cpu_core_index_of_thread(int cpu)


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