powerpc/powernv: Fetch frozen PE on top level
It should have been part of commit 1ad7a72c ("powerpc/eeh: Report frozen parent PE prior to child PE"). There are 2 ways to report EEH errors: proactively polling because of 0xFF's returned from PCI config or IO read, or interrupt driven event. We missed to report and handle parent frozen PE prior to child frozen PE for the later case on PowerNV platform. Signed-off-by: NGavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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