From: Yinghai Lu <yinghai@kernel.org>
Date: Fri, 18 May 2012 01:51:11 +0000 (-0700)
Subject: PCI: build a bus number resource tree for every domain
X-Git-Tag: v3.6-rc1~112^2~21^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5cc62c202211096ec26309722ec27455d52c8726;p=pandora-kernel.git

PCI: build a bus number resource tree for every domain

This adds get_pci_domain_busn_res(), which returns the root of the
bus number resource tree for a domain, creating it if necessary.
We will later populate the tree with the bus numbers used by host
bridges and P2P bridges in the domain.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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