[PATCH v3 01/38] Kconfig: introduce HAS_IOPORT option and select it as necessary

[Niklas Schnelle]

On Tue, 2023-03-14 at 13:11 +0100, Niklas Schnelle wrote:
> We introduce a new HAS_IOPORT Kconfig option to indicate support for I/O
> Port access. In a future patch HAS_IOPORT=n will disable compilation of
> the I/O accessor functions inb()/outb() and friends on architectures
> which can not meaningfully support legacy I/O spaces such as s390. Also
> add dependencies on HAS_IOPORT for the ISA and HAVE_EISA config options
> as these busses always go along with HAS_IOPORT.
> 
> The "depends on" relations on HAS_IOPORT in drivers as well as ifdefs
> for HAS_IOPORT specific sections will be added in subsequent patches on
> a per subsystem basis.
> 
> Co-developed-by: Arnd Bergmann <arnd at kernel.org>
> Signed-off-by: Niklas Schnelle <schnelle at linux.ibm.com>
> ---
> 

@Arnd, I swear I asked you and then added Signed-off-bys for all these
Co-developed-bys as suggested by checkpatch. Sadly that must have been
during my failed attempt of converting to b4 prep / b4 send before
sending this last Friday and then it got lost. It almost worked and is
a very nice work flow except that b4 currently can only use a single
list of To/Cc fields and for this treewide series that would probably
hit mail server limits. Added it now.

Thanks,
Niklas