# Re: \[PATCH v4 09/15\] pci: Consolidate pci\_iomap\* and pci\_iomap\*wc

- From: Andi Kleen \<hidden\>
- Date: 2021-08-12 22:11:46 
- List: linux-doc
- Page: https://ratatoskr.run/linux-doc/2021/08/1476521
- Thread: https://ratatoskr.run/linux-pci/2021/08/1468282/t.md

```text

> Why is it safe to make pci_iomap_wc_range() support IO ports when it
> didn't before?  That might be desirable, but I think it *is* a
> functional change here.

None of the callers use it to map IO ports, so it will be a no-op for them. But you're right, it's a (minor) functional change.

-Andi




```