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powerpc/pci: Fix crash in PCI code on ppc64 when matching device nodes
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Sun, 20 Mar 2011 23:57:57 +0000 (10:57 +1100)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Sun, 20 Mar 2011 23:57:57 +0000 (10:57 +1100)
Commit b5d937de0367d26f65b9af1aef5f2c34c1939be0 has a bug which causes
basically a NULL dereference in the PCI code during boot on ppc64
machines.

fetch_dev_dn() is called when dev->dev.of_node is NULL, so using that
as the starting point for the search makes no sense. It should instead
start from the device node of the PHB.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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