linux-kernel - Re: [PATCH] x86/pci: don't set acpi stuff if !CONFIG

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Date:   Fri, 21 Aug 2020 22:32:32 +0200
From:   Adam Borowski <kilobyte@...band.pl>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, linux-pci@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Len Brown <len.brown@...el.com>
Subject: Re: [PATCH] x86/pci: don't set acpi stuff if !CONFIG_ACPI

On Fri, Aug 21, 2020 at 10:13:25PM +0200, Thomas Gleixner wrote:
> On Thu, Aug 20 2020 at 14:53, Adam Borowski wrote:
> > Found by randconfig builds.
> >
> >  arch/x86/pci/intel_mid_pci.c | 2 ++
> >  arch/x86/pci/xen.c           | 2 ++

> > --- a/arch/x86/pci/intel_mid_pci.c
> > +++ b/arch/x86/pci/intel_mid_pci.c
> > @@ -299,8 +299,10 @@ int __init intel_mid_pci_init(void)
> > +#ifdef CONFIG_ACPI
> >  	/* Continue with standard init */
> >  	acpi_noirq_set();
> > +#endif

> If CONFIG_ACPI=n then acpi_noirq_set() is an empty stub inline. So I'm
> not sure what you are trying to solve here.
> 
> Ah, I see with CONFIG_ACPI=n linux/acpi.h does not include asm/acpi.h so
> the stubs are unreachable. So that needs to be fixed and not papered
> over with #ifdeffery

If I understand Randy Dunlap correctly, he already sent a pair of patches
that do what you want.


Meow.
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