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powerpc/powernv: Don't use pe->pbus to get the domain number
authorGavin Shan <gwshan@linux.vnet.ibm.com>
Thu, 24 Apr 2014 08:00:29 +0000 (18:00 +1000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 28 Apr 2014 07:35:14 +0000 (17:35 +1000)
If the PE contains single PCI function, "pe->pbus" would be NULL.
It's not reliable to be used by pci_domain_nr().  We just grab the
PCI domain number from the PCI host controller (struct pci_controller)
instance.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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