powerpc/powernv: Disable interrupts while taking phb->lock
We need to disable interrupts when taking the phb->lock. Otherwise we could deadlock with pci_lock taken from an interrupt. Signed-off-by: NMichael Ellerman <michael@ellerman.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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