Re: [PATCH] iwlwifi: work around reverse dependency on MEI

[Johannes Berg]

On Tue, 2021-12-07 at 14:25 +0100, Arnd Bergmann wrote:

> > >  config IWLMEI
> > > -     tristate "Intel Management Engine communication over WLAN"
> > > -     depends on INTEL_MEI
> > > +     bool "Intel Management Engine communication over WLAN"
> > > +     depends on INTEL_MEI=y || INTEL_MEI=IWLMVM
> > > +     depends on IWLMVM=y || IWLWIFI=m
> > >       depends on PM
> > > -     depends on IWLMVM
> > >       help
> > >         Enables the iwlmei kernel module.
> > 
> > Johannes suggested to make IWLMVM depend on IWLMEI || !IWLMEI
> > That worked as well, I just had issues with this in our internal backport based tree.
> > I need to spend a bit more time on this, but I admit my total ignorance in Kconfig's dialect.
> 
> It's still not enough, the dependency is in iwlwifi, not in iwlmvm, so it
> would remain broken for IWLWIFI=y IWLMVM=m IWLMEI=m.
> 

I missed the pcie/trans.c dependency, and the others are (I think) in
mvm...

but then we can do

config IWLWIFI
	...
	depends on IWLMEI || !IWLMEI
	...

no? That way, we exclude IWLWIFI=y && IWLMEI=m, which I believe causes
the issue? And IWLMVM already depends on IWLWIFI (via the if clause), so
that 

johannes