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Check that the e100 is in the D0 power state. If it's not, it won't respond to MMIO accesses and we end up with master-abort machine checks on some platforms. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>