Am 18.06.14 10:57, schrieb Christian Zigotzky:

Am 18.06.14 08:51, schrieb Michael Ellerman:

quoted

On Tue, 2014-06-10 at 15:20 +0200, Christian Zigotzky wrote:

quoted

Hi All,

Could you help me to remove the changes of the PCI code, please? Or
which patches shall I remove to get the old PCI code?

Hi Christian,

Thanks for doing the bisect. It wasn't clear why that change was 
causing your
issue, so I guess we're a bit stuck.

Olof (on CC), was going to try and look at it when he got some spare 
time.
Please keep him on CC.

cheers

Hi Michael,

Thank you for your answer. Adrian told me the reason about this issue.

Quote Adrian:

As I recall, PCI resource allocation on Nemo was always a little 
strange due to using an AMD south bridge together with the PA6T north 
bridge. The south bridge does not behave as a standard PCIe device, 
but instead presents itself as multiple devices on the PCIe root bus. 
This is not compliant with the PCIe specification. We modified the 
core powerpc PCI code so that Nemo could boot, but the changes to PCI 
code in 3.15 have broken the old workaround. I don't understand the 
PCI changes in 3.15 enough to comment further at this point.

Regards,
Adrian

Quote end

Cheers,

Christian

But my opinion is, that's normal for the SB600 south bridge to presents 
itself as multiple devices on the PCIe bus on x86 PCs. I see a lot of 
PCs with SB600 south bridge on the internet. And the Linux kernel works 
with this south bridge. Or is it a powerpc issue?

- Christian