[POWERPC] 32-bit early_init() should zero from __bss_start to __bss_stop only

[Benjamin Herrenschmidt]

On Wed, 2006-10-25 at 16:36 -0700, Mark A. Greer wrote:
> Currently, early_init() in setup_32.c zeroes from '_bss_start' to '_end'.
> It should only zero from '__bss_start' to '__bss_stop'.  This patch does that.
> 
> Signed-off-by: Mark A. Greer <mgreer at mvista.com>

Acked-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>

> 
>  setup_32.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletion(-)
> ---
> 
> diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
> index a4c2964..c682e9a 100644
> --- a/arch/powerpc/kernel/setup_32.c
> +++ b/arch/powerpc/kernel/setup_32.c
> @@ -95,7 +95,8 @@ unsigned long __init early_init(unsigned
>  
>  	/* First zero the BSS -- use memset_io, some platforms don't have
>  	 * caches on yet */
> -	memset_io((void __iomem *)PTRRELOC(&__bss_start), 0, _end - __bss_start);
> +	memset_io((void __iomem *)PTRRELOC(&__bss_start), 0,
> +			__bss_stop - __bss_start);
>  
>  	/*
>  	 * Identify the CPU type and fix up code sections
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