linux-kernel - Re: [2.6.31.13] Build failure at arch/x86/kernel/apic/io

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Message-Id: <201004120410.o3C4Axwe066941@www262.sakura.ne.jp>
Date:	Mon, 12 Apr 2010 13:10:59 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	gregkh@...e.de, trenn@...e.de, yinghai@...nel.org, hpa@...or.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [2.6.31.13] Build failure at arch/x86/kernel/apic/io_apic.c

Commit d539e5576605d048e6aeb21cbe3a8e71dc5eea81 "x86: Fix SCI on IOAPIC != 0"
introduced "void setup_IO_APIC_irq_extra(u32 gsi)" which calls
mp_find_ioapic() and mp_find_ioapic_pin().

This commit does not compile if CONFIG_X86_IO_APIC=y and CONFIG_ACPI=n .

Regards.

Greg KH wrote:
> On Mon, Apr 12, 2010 at 11:30:43AM +0900, Tetsuo Handa wrote:
> > Hello.
> > 
> >   CC      arch/x86/kernel/apic/io_apic.o
> > arch/x86/kernel/apic/io_apic.c: In function `setup_IO_APIC_irq_extra':
> > arch/x86/kernel/apic/io_apic.c:1575: error: implicit declaration of function `mp_find_ioapic'
> > arch/x86/kernel/apic/io_apic.c:1579: error: implicit declaration of function `mp_find_ioapic_pin'
> > make[3]: *** [arch/x86/kernel/apic/io_apic.o] Error 1
> > make[2]: *** [arch/x86/kernel/apic] Error 2
> > make[1]: *** [arch/x86/kernel] Error 2
> > make: *** [arch/x86] Error 2
> > 
> > This is because
> > 
> > #ifdef CONFIG_ACPI
> > (...snipped...)
> > #ifdef CONFIG_X86_IO_APIC
> > extern int mp_find_ioapic(int gsi);
> > extern int mp_find_ioapic_pin(int ioapic, int gsi);
> > #endif
> > (...snipped...)
> > #endif
> > 
> > but CONFIG_X86_IO_APIC=y and CONFIG_ACPI=n in my config.
> > 2.6.31.12 was OK.
> 
> What patch caused this?
> 
> thanks,
> 
> greg k-h
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