[PATCH 2/2] PCI: dw-rockchip: hide broken ATS capability

[Krzysztof Wilczyński]

Hello,

[...]
> Can you include something here about what the issue is?  Based on the
> subject line and the patch, I assume something is wrong with the ATS
> Capability?  I guess this is some kind of rk3588 defect, right?
> 
> > Usually, to handle these issues, we add a quirk for the PCI vendor and
> > device ID in drivers/pci/quirks.c with quirk_no_ats(). That is because
> > we cannot usually modify the capabilities on the EP side.
> > 
> > In this case, we can modify the capabilties on the EP side. Thus, hide the
> > broken ATS capability on rk3588 when running in EP mode. That way,
> > we don't need any quirk on the host side, and we see no errors on the host
> > side, and we can run pci_endpoint_test successfully, with the IOMMU
> > enabled on the host side.

Rockchip folks, anything to add about this issue?  Perhaps there is an
erratum about this?  Any code reviews?  Anything?

Western Digital folks are doing you a lot of favour with all the upstream
work they do maintaining drivers for your platforms.  But it would be nice
if Rockchip took some ownership.  I have seen none recently.  No reviews,
not even an Acked-by, nothing.  A bit of a letdown, if you ask me.

Thank you!

	Krzysztof