On Tue, Jan 14, 2025 at 06:11:58PM +0000, Jiaxun Yang wrote:
> pci-legacy systems are not using logic_pio to managed PIO
> allocations, thus the generic pci_address_to_pio won't work
> when PCI_IOBASE is defined.
>
> Override the function to use architecture implementation to
> fix the problem.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 4bfb53e7d317 ("mips: add <asm-generic/io.h> including")
> Reported-by: Mateusz Jończyk <mat.jonczyk@xxxxx>
> Closes: https://lore.kernel.org/r/99f75c66-4c2d-45dc-a808-b5ba440c7551@xxxxxxxxxxxxxxxx/
> Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
> ---
> This is a quick fix for fixes tree and stable backporting.
> In long term, we should get logic_pio accept fixed mapping,
> and make PCI core code aware of platforms not using vmap
> for PCI_IOBASE.
Why not do the real work now. Don't worry about stable kernels, fix it
properly.
thanks,
greg k-h
