Re: intelfb: enable on x86_64

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On Tue, Jun 20, 2006 at 03:12:00AM +0000, Linux Kernel wrote:
 > commit 0c187addabbaf93512902442b4a90140a21b0ddc
 > tree 40cd618a76474ec9ba2cfde129315c7ebbaf4f9f
 > parent 16109b3f4c1f2635afd32eb6d49348590de2cb25
 > author Dave Airlie <[email protected]> Thu, 23 Mar 2006 11:20:08 +1100
 > committer Dave Airlie <[email protected]> Mon, 03 Apr 2006 11:43:28 +1000
 > 
 > intelfb: enable on x86_64
 > 
 > i945G chipsets supports 64-bit.
 > 
 > Signed-off-by: Dave Airlie <[email protected]>
 > 
 >  drivers/video/Kconfig |    2 +-
 >  1 files changed, 1 insertion(+), 1 deletion(-)
 > 
 > diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
 > index f87c017..190adce 100644
 > --- a/drivers/video/Kconfig
 > +++ b/drivers/video/Kconfig
 > @@ -741,7 +741,7 @@ config FB_I810_I2C
 >  
 >  config FB_INTEL
 >  	tristate "Intel 830M/845G/852GM/855GM/865G support (EXPERIMENTAL)"
 > -	depends on FB && EXPERIMENTAL && PCI && X86_32
 > +	depends on FB && EXPERIMENTAL && PCI && X86
 >  	select AGP
 >  	select AGP_INTEL
 >  	select FB_MODE_HELPERS

This turned into an unpleasant surprise.
If you select for eg, IOMMU=y and CONFIG_AGP=y, and CONFIG_FB_INTEL=m,
then CONFIG_AGP gets silently turned into a =m, and the build fails with this..

arch/x86_64/kernel/pci-gart.c:619: undefined reference to `agp_amd64_init'
arch/x86_64/kernel/pci-gart.c:619: undefined reference to `agp_bridge'
arch/x86_64/kernel/pci-gart.c:619: undefined reference to `agp_copy_info'

		Dave

-- 
http://www.codemonkey.org.uk
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