tree 48e73a52bd8b79b5b8674243b54b5f2e346e5b9b
parent debc3b778508f59696ff188f0feca271dcbfa7d9
author David Daney <david.daney@cavium.com> 1313519077 -0700
committer Jesse Barnes <jbarnes@virtuousgeek.org> 1313769097 -0700

PCI: OF: Don't crash when bridge parent is NULL.

In pcibios_get_phb_of_node(), we will crash while booting if
bus->bridge->parent is NULL.

Check for this case and avoid dereferencing the NULL pointer.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>