This series fixes couple issues or improves its reliability:
* The PDC event is never detected inside the IRQ handler in surprise
hot-add path.
* The slot's initial state should be REGISTERED state if it's emtpy.
Otherwise, the PCI devices behind the slot won't be populated properly
in hot-add path.
* PDC isn't reliable for hot-add on some machines. Introduce another
device-tree property to disable it if required by (skiboot) firmware.
Gavin Shan (3):
drivers/pci/hotplug: Handle presence detection change properly
drivers/pci/hotplug: Fix initial state for empty slot
drivers/pci/hotplug: Mask PDC interrupt if required
arch/powerpc/include/asm/pnv-pci.h | 2 ++
drivers/pci/hotplug/pnv_php.c | 49 +++++++++++++++++++++++++++++++-------
2 files changed, 43 insertions(+), 8 deletions(-)
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2.7.4