tree db0a20e2ead6a865af786e09e90ce1159a277c9e
parent 0c0d61ca93d111c521182c0909e478fa709e05c6
author Andi Kleen <andi@firstfloor.org> 1202690120 +0100
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202750450 -0800

Prevent IDE boot ops on NUMA system

Without this patch a Opteron test system here oopses at boot with
current git.

Calling to_pci_dev() on a NULL pointer gives a negative value so the
following NULL pointer check never triggers and then an illegal address
is referenced.  Check the unadjusted original device pointer for NULL
instead.

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