[Very RFC 33/46] powernv/pci: Remove open-coded PE lookup in iommu notifier

[Oliver O'Halloran]

Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
---
 arch/powerpc/platforms/powernv/pci.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci.c 
b/arch/powerpc/platforms/powernv/pci.c
index 5b1f4677cdce..0eeea8652426 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -943,23 +943,22 @@ static int pnv_tce_iommu_bus_notifier(struct 
notifier_block *nb,
 {
        struct device *dev = data;
        struct pci_dev *pdev;
-       struct pci_dn *pdn;
        struct pnv_ioda_pe *pe;
        struct pnv_phb *phb;
 
        switch (action) {
        case BUS_NOTIFY_ADD_DEVICE:
                pdev = to_pci_dev(dev);
-               pdn = pci_get_pdn(pdev);
                phb = pci_bus_to_pnvhb(pdev->bus);
 
                WARN_ON_ONCE(!phb);
-               if (!pdn || pdn->pe_number == IODA_INVALID_PE || !phb)
+               if (!phb)
                        return 0;
 
-               pe = &phb->ioda.pe_array[pdn->pe_number];
-               if (!pe->table_group.group)
+               pe = pnv_ioda_get_pe(pdev);
+               if (!pe || !pe->table_group.group)
                        return 0;
+
                iommu_add_device(&pe->table_group, dev);
                return 0;
        case BUS_NOTIFY_DEL_DEVICE:
-- 
2.21.0