linux-kernel - Re: [PATCH] x86, acpi: temp_stack is used only when CONFIG

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Message-ID: <20080807081245.GA1647@elf.ucw.cz>
Date:	Thu, 7 Aug 2008 10:12:46 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	Marcin Slusarz <marcin.slusarz@...il.com>
Cc:	Sven Wegener <sven.wegener@...aler.net>,
	LKML <linux-kernel@...r.kernel.org>,
	Glauber Costa <gcosta@...hat.com>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH] x86, acpi: temp_stack is used only when CONFIG_SMP is
	set

Hi!

> > > arch/x86/kernel/acpi/sleep.c:24: warning: 'temp_stack' defined but not used
> > > 
> > > Signed-off-by: Marcin Slusarz <marcin.slusarz@...il.com>
> > > Cc: Glauber Costa <gcosta@...hat.com>
> > > Cc: Pavel Machek <pavel@...e.cz>
> > > Cc: Ingo Molnar <mingo@...e.hu>
> > > ---
> > >  arch/x86/kernel/acpi/sleep.c |    2 +-
> > >  1 files changed, 1 insertions(+), 1 deletions(-)
> > > 
> > > diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
> > > index fa2161d..9103cb6 100644
> > > --- a/arch/x86/kernel/acpi/sleep.c
> > > +++ b/arch/x86/kernel/acpi/sleep.c
> > > @@ -20,7 +20,7 @@ unsigned long acpi_realmode_flags;
> > >  /* address in low memory of the wakeup routine. */
> > >  static unsigned long acpi_realmode;
> > >  
> > > -#ifdef CONFIG_64BIT
> > > +#ifdef CONFIG_SMP
> > >  static char temp_stack[10240];
> > >  #endif
> > >  
> > 
> > Now it still generates the warning, but on i386 with CONFIG_SMP set, 
> > instead of x86_64 without CONFIG_SMP. We only need temp_stack, when both 
> > CONFIG_64BIT and CONFIG_SMP are activated.
> 
> Yes. Thanks for looking at the patch!
> 
> ---
> From c6e673acf02e8bf04866cadf17c1cb1fa4d852ea Mon Sep 17 00:00:00 2001
> From: Marcin Slusarz <marcin.slusarz@...il.com>
> Subject: [PATCH] x86, acpi: temp_stack is used only when CONFIG_64BIT && CONFIG_SMP is set
> 
> arch/x86/kernel/acpi/sleep.c:24: warning: 'temp_stack' defined but not used
> 
> Signed-off-by: Marcin Slusarz <marcin.slusarz@...il.com>
> Cc: Glauber Costa <gcosta@...hat.com>

Acked-by: Pavel Machek <pavel@...e.cz>

Ingo, can you merge this one?

									Pavel
-- 
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