linux-kernel - Re: Kconfig configuration restore bug [Was: x86: vSMP selection in config]

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Date:	Wed, 27 Feb 2008 03:59:45 +0100 (CET)
From:	Roman Zippel <zippel@...ux-m68k.org>
To:	Sam Ravnborg <sam@...nborg.org>
cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	kiran@...lemp.com, shai@...lemp.com,
	Glauber Costa <gcosta@...hat.com>,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	Yinghai Lu <Yinghai.Lu@....COM>
Subject: Re: Kconfig configuration restore bug [Was: x86: vSMP selection in
 config]

Hi,

On Tue, 26 Feb 2008, Sam Ravnborg wrote:

> choice
> 	prompt "Subarchitecture Type"
> 
> config X86_PC
> 	bool "PC-compatible"
> 
> config X86_VOYAGER
> 	bool "Voyager (NCR)"
> 
> config X86_VSMP
> 	bool "Support for ScaleMP vSMP"
> 	depends on PCI
> 
> endchoice
> 
> config PCI
> 	bool "PCI support" if !X86_VISWS
> 	depends on !X86_VOYAGER
> 	default y

The basic problem is that this is a recursive dependency - PCI depends on 
the choice and the choice depends on PCI. IMO X86_VSMP cannot depend on 
PCI.
I'm looking into why this hasn't been picked up by the dependency check...

bye, Roman
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