Re: [PATCH 2/8] Kconfig: unwanted menus for s390.

Arnd Bergmann
2007-04-22T00:32:23Z

On Sunday 22 April 2007, Arnd Bergmann wrote:
> I would prefer to not have 'depends on !S390' but rather 'depends on MMIO',
> because that is what really drives stuff like IPMI: they expect the device
> to be reachable through the use of ioremap or inX/outX instructions, which
> don't exist on s390.
>
> While it's unlikely that another architecture has the same restriction,
> it expresses much clearer what you mean.
>
> In drivers/Kconfig, you can then simply add a
>
> config MMIO
>         def_bool !S390

I just saw that we already have an option like that, with a slightly different
name.

arch/s390/Kconfig contains

config NO_IOMEM
def_bool y

and lib/Kconfig contains

config HAS_IOMEM
boolean
depends on !NO_IOMEM
default y

You should probably just use one of these two to disable any driver that
uses ioremap or similar.