Recent changes which removed the use of IO tokens for EEH enabled devices
had a bug, which mean we now never do EEH checks at all.

This patch corrects the problem.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>