Re: [PATCH v3 5/5] lib, pci: unify generic pci_iounmap()

[Arnd Bergmann]

On Tue, Dec 5, 2023, at 15:34, Philipp Stanner wrote:
> Alright, so it seems that not all architectures provide ioport_unmap().
> So I'll provide yet another preprocessor guard in v4. Wohooo, we love
> them...

Right, I think CONFIG_HAS_IOPORT_MAP is the symbol you
need to check here. There are a few targets that have inb/outb
but can't map them to __iomem pointers for some reason, 
as well as more that have neither CONFIG_HAS_IOPORT nor
CONFIG_HAS_IOPORT_MAP.

     Arnd