Re: [PATCH v3 5/6] MIPS: implement architecture-specific 'pci_remap_iospace()'

[Tiezhu Yang]

On 12/16/2021 07:44 PM, Xi Ruoyao wrote:
> On Sat, 2021-09-25 at 22:32 +0200, Sergio Paracuellos wrote:
> > To make PCI IO work we need to properly virtually map IO cpu physical address
> > and set this virtual address as the address of the first PCI IO port which
> > is set using function 'set_io_port_base()'.
> >
> > Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
> > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@xxxxxxxxx>
>
> Hi,
>
> the change is causing a WARNING on loongson64g-4core-ls7a:
>
> [    0.105781] loongson-pci 1a000000.pci:       IO 0x0018020000..0x001803ffff ->
>  0x0000020000
> [    0.105792] loongson-pci 1a000000.pci:      MEM 0x0040000000..0x007fffffff ->
>  0x0040000000
> [    0.105801] ------------[ cut here ]------------
> [    0.105804] WARNING: CPU: 0 PID: 1 at arch/mips/pci/pci-generic.c:55 pci_remap_iospace+0x80/0x88
> [    0.105815] resource start address is not zero
>
> I'm not sure how to fix this one.

MIPS: Only define pci_remap_iospace() for Ralink

https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git/commit/?h=mips-fixes&id=09d97da660ff77df20984496aa0abcd6b88819f2