Re: [RFC 03/32] ACPI: Kconfig: add HAS_IOPORT dependencies

[Niklas Schnelle]

On Mon, 2021-12-27 at 17:47 +0100, Rafael J. Wysocki wrote:
> On Mon, Dec 27, 2021 at 5:44 PM Niklas Schnelle <schnelle@xxxxxxxxxxxxx> wrote:
> > In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> > not being declared. As ACPI always uses I/O port access
> 
> The ARM64 people may not agree with this.

Maybe my wording is bad. This is my rewording of what Arnd had in his
original mail: "The ACPI subsystem needs access to I/O ports, so that
also gets a dependency."(
https://lore.kernel.org/lkml/CAK8P3a0MNbx-iuzW_-=0ab6-TTZzwV-PT_6gAC1Gp5PgYyHcrA@xxxxxxxxxxxxxx/
).

> 
> > we depend on HAS_IOPORT unconditionally.
> > 
> > Co-developed-by: Arnd Bergmann <arnd@xxxxxxxxxx>
> > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxxxx>
> > Signed-off-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx>
> > ---
> >  drivers/acpi/Kconfig | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
> > index cdbdf68bd98f..b57f15817ede 100644
> > --- a/drivers/acpi/Kconfig
> > +++ b/drivers/acpi/Kconfig
> > @@ -9,6 +9,7 @@ config ARCH_SUPPORTS_ACPI
> >  menuconfig ACPI
> >         bool "ACPI (Advanced Configuration and Power Interface) Support"
> >         depends on ARCH_SUPPORTS_ACPI
> > +       depends on HAS_IOPORT
> >         select PNP
> >         select NLS
> >         default y if X86
> > --
> > 2.32.0
> >