linux-kernel - Re: -tip: origin tree build failure

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Message-ID: <1261086791.2505.13.camel@zim.stowe>
Date:	Thu, 17 Dec 2009 14:53:11 -0700
From:	Myron Stowe <myron.stowe@...com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org, Len Brown <lenb@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Bjorn Helgaas <bjorn.helgaas@...com>
Subject: Re: -tip: origin tree build failure

On Thu, 2009-12-17 at 08:50 +0100, Ingo Molnar wrote:
> Today's -tip failed to build because commit 
> 9e368fa011d4e0aa050db348d69514900520e40b ("ipmi: add PNP discovery (ACPI 
> namespace via PNPACPI)") from today's upstream kernel causes the following 
> build failure on x86, for CONFIG_ACPI=n && CONFIG_IPMI_SI=y:
> 
>  drivers/char/ipmi/ipmi_si_intf.c:3208: error: 'ipmi_pnp_driver' undeclared (first use in this function)
>  drivers/char/ipmi/ipmi_si_intf.c:3208: error: (Each undeclared identifier is reported only once
>  drivers/char/ipmi/ipmi_si_intf.c:3208: error: for each function it appears in.)
>  drivers/char/ipmi/ipmi_si_intf.c:3334: error: 'ipmi_pnp_driver' undeclared (first use in this function)
> 
> The reason is that the ipmi_pnp_driver depends on ACPI facilities and is only 
> made available under ACPI - while the registration and unregistration is made 
> dependent on CONFIG_PNP:
> 
>  #ifdef CONFIG_PNP
>  	pnp_register_driver(&ipmi_pnp_driver);
>  #endif
> 
> The solution is to only register this driver under ACPI. (Also, the CONFIG_PNP 
> dependency is not needed because pnp_register_driver() is stubbed out in the 
> !CONFIG_PNP case.)

Yes, sorry we missed this case.
> 
> I've applied the patch below to tip:out-of-tree for now.

Looks good to us.  Thanks!

Myron
> 
> Thanks,
> 
> 	Ingo
> 
> Signed-off-by: Ingo Molnar <mingo@...e.hu>
> 
> diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
> index 679cd08..176f175 100644
> --- a/drivers/char/ipmi/ipmi_si_intf.c
> +++ b/drivers/char/ipmi/ipmi_si_intf.c
> @@ -3204,7 +3204,7 @@ static __devinit int init_ipmi_si(void)
>  #ifdef CONFIG_ACPI
>  	spmi_find_bmc();
>  #endif
> -#ifdef CONFIG_PNP
> +#ifdef CONFIG_ACPI
>  	pnp_register_driver(&ipmi_pnp_driver);
>  #endif
>  
> @@ -3330,7 +3330,7 @@ static __exit void cleanup_ipmi_si(void)
>  #ifdef CONFIG_PCI
>  	pci_unregister_driver(&ipmi_pci_driver);
>  #endif
> -#ifdef CONFIG_PNP
> +#ifdef CONFIG_ACPI
>  	pnp_unregister_driver(&ipmi_pnp_driver);
>  #endif
>  
> 


-- 
Myron Stowe                             HP Open Source Linux Lab (OSLL)

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