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

[Mark A. Greer]

Paul,

This one was dropped somewhere along the way...

Mark
---

On Thu, Oct 26, 2006 at 10:06:16AM +1000, Benjamin Herrenschmidt wrote:
> 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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