powerpc/pci: Fix regression in powerpc MSI-X
Patch f598282f exposed a problem in powerpc MSI-X functionality, making network interfaces such as ixgbe and cxgb3 stop to work when MSI-X is enabled. RX interrupts were not being generated. The problem was caused because MSI irq was not being effectively unmasked after device initialization. Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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