[PATCH v8 1/3] riscv: io: avoid null-pointer arithmetic in PIO helpers

[Paul Walmsley]

On Fri, 3 Jul 2026, Yunhui Cui wrote:

> When port I/O is not supported, exposing the port-string helpers is both
> unnecessary and can make clang diagnose null-pointer arithmetic from the
> PCI_IOBASE based address expression.  Keep the MMIO string helpers
> available as before, but only provide the port I/O variants when
> CONFIG_HAS_IOPORT is enabled.
> 
> Signed-off-by: Yunhui Cui <cuiyunhui at bytedance.com>
> Reviewed-by: Arnd Bergmann <arnd at arndb.de>

Thanks, queued for v7.2-rc.


- Paul