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Date:	Mon, 13 Oct 2008 14:26:31 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Brice Goglin <brice@...i.com>,
	Jeff Garzik <jgarzik@...hat.com>,
	Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc:	linux-kernel@...r.kernel.org, apw@...dowen.org,
	linuxppc-dev@...abs.org, sam@...nborg.org,
	e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: Re: [BUILD_FAILURE] 2.6.27-git2 - allyesconfig on powerpc selects
	CONFIG_INTEL_IOATDMA=y

On Mon, Oct 13, 2008 at 03:45:59PM +0530, Kamalesh Babulal wrote:
> Hi,
> 
>    2.6.27-git2 kernel build fails, while building the kernel with
> allyesconfig option. The allyesconfig selects CONFIG_INTEL_IOATDMA=y
> 
> CC   drivers/dma/ioat_dca.o
> drivers/dma/ioat_dca.c: In function ‘dca_enabled_in_bios’:
> drivers/dma/ioat_dca.c:81: error: implicit declaration of function ‘cpuid_eax’
> drivers/dma/ioat_dca.c: In function ‘system_has_dca_enabled’:
> drivers/dma/ioat_dca.c:91: error: implicit declaration of function ‘boot_cpu_has’
> drivers/dma/ioat_dca.c:91: error: ‘X86_FEATURE_DCA’ undeclared (first use in this function)
> drivers/dma/ioat_dca.c:91: error: (Each undeclared identifier is reported only once
> drivers/dma/ioat_dca.c:91: error: for each function it appears in.)
> drivers/dma/ioat_dca.c: In function ‘ioat_dca_get_tag’:
> drivers/dma/ioat_dca.c:190: error: implicit declaration of function ‘cpu_physical_id’
> make[2]: *** [drivers/dma/ioat_dca.o] Error 1
> make[1]: *** [drivers/dma] Error 2
> make: *** [drivers] Error 2
>...

Thanks for the report, the MYRI10GE and IXGBE commits that introduced 
the select's are really broken.

For fixing it I need to know the intended semantics.

Brian, Jesse, is it OK to limit the drivers to m with 
CONFIG_INTEL_IOATDMA=m ?

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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