On Mon, Dec 21, 2009 at 10:51:16AM -0800, Philip A. Prindeville wrote:
> On 12/21/2009 12:24 AM, Holger Schurig wrote:
> >> And what are the steps to figuring out the dependency that
> >> keeps forcing it on? Something must be doing a "select SSB"
> >> but I'm not sure what.
> >
> > "make xconfig", and then turn on "Options -> Show Debug Info".
> >
> > Then you see the reverse dep.
> >
> >
> > Another thing would be "find -name Kconfig |xargs grep
> > SSB_POSSIBLE" and then carefully check those files.
>
> Well, as I mentioned, arch/x86/configs/i386_defconfig contains:
>
> CONFIG_SSB_POSSIBLE=y
>
> which I've not been able to understand why. There are lots of x86 configurations where this might *not* be possible, in embedded platforms in particular.
config SSB_POSSIBLE
bool
depends on HAS_IOMEM && HAS_DMA
default y
What x86 configurations don't have IOMEM or DMA? And what difference
does it make if SSB_POSSIBLE is defined if it doesn't build any code?
John
--
John W. Linville Someday the world will need a hero, and you
linville@xxxxxxxxxxxxx might be all we have. Be ready.
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