2bbfb16bf345acd81ab1e6e3d4b35964650517ac
author Andi Kleen <ak@suse.de> 1124759667 +0200
committer Linus Torvalds <torvalds@g5.osdl.org> 1124852379 -0700

[PATCH] x86_64: Don't oops at boot when empty Opteron node has IO

The code to detect IO links on Opteron would not check
if the node had actually memory. This could lead to pci_bus_to_node
returning an invalid node, which might cause crashes later
when dma_alloc_coherent passes it to page_alloc_node().

The bug has been there forever but for some reason
it is causing now crashes.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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