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SubjectRe: [PATCH] x86: olpc: fix inconsistent MFD_CS5535 configuration
On Wed, 4 Apr 2018, Arnd Bergmann wrote:

> On Wed, Apr 4, 2018 at 4:09 PM, Thomas Gleixner <> wrote:
> > On Wed, 4 Apr 2018, Arnd Bergmann wrote:
> >
> >> This Kconfig warning appeared after a fix to the Kconfig validation.
> >> The GPIO_CS5535 driver depends on the MFD_CS5535 driver, but the former
> >> is selected in places where the latter is not:
> >
> > And why does GPIO_CS5535 not select MFD_CS5535 if it depends on it?
> I tried that first and ran into circular dependencies: OLPC_XO1_SCI selects
> GPIO_CS5535 but depends on OLPC_XO1_PM, which in turn depends on
> MFD_CS5535.


> What we could perhaps do is to make OLPC_XO1_PM select MFD_CS5535
> instead of depending on it, that way it would be forced to be built-in here.
> I can run a few more builds on that version if you prefer it.
> Generally speaking,
> turning 'depends on' into 'select' tends to cause more problems with circular
> dependencies than doing it the other way round.

Fair enough.

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