Re: [PATCH V4] Revert "PCI: tegra194: Enable support for 256 Byte payload"

Krzysztof Wilczyński
2023-08-03T18:51:53Z

Hello!

[...]
> > > After commit 4fb8e46c1bc4 ("PCI: tegra194: Enable support for 256 Byte
> > > payload"), we set MPS=256 for tegra194 Root Ports.
> > >
> > > By default (CONFIG_PCIE_BUS_DEFAULT set and no "pci=pcie_bus_*"
> > > parameter), Linux configures the MPS of every device to match the
> > > upstream bridge, which is impossible if the Root Port has MPS=256
> > > and a device only supports MPS=128.
> >
> > Thanks for pointing out that I broke this log by omitting the mention
> > of a switch. Is the rewording below better? If so, Krzysztof can
> > amend the commit.
> Yes. The below rewording looks good.

Updated commit at:

https://git.kernel.org/pci/pci/c/ebfde1584d9f

Thank you everyone!

Krzysztof