[Skiboot] [PATCH] pci: Try harder to add meaningful ibm, loc-code

[Stewart Smith]

Stewart Smith <stewart at linux.ibm.com> writes:
> We keep the existing logic of looking to the parent for the slot-label or
> slot-location-code, but we add logic to (if all that fails) we look
> directly for the slot-location-code (as this should give us the correct
> loc code for things directly under the PHB), and otherwise we just look
> for a loc-code.
>
> The applicable bit of PAPR here is:
>
>   R1–12.1–1. Each instance of a hardware entity (FRU) has a platform
>   unique location code and any node in the OF
>   device tree that describes a part of a hardware entity must include the
>   “ibm,loc-code” property with a
>   value that represents the location code for that hardware entity.
>
> which we weren't really fully obeying at any recent (ever?) point in
> time. Now we should do okay, at least for PCI.
>
> Signed-off-by: Stewart Smith <stewart at linux.ibm.com>

Merged as of 119108908e9b1de9a3f24f27a16f4efe4ca3a0b4.

Hopefully everething is smooth with it and we're at an okay state. I
only think I proved this all to myself, so it complies with my version
of reality at least.

-- 
Stewart Smith
OPAL Architect, IBM.