[Very RFC 32/46] powernv/pci: Remove open-coded PE lookup in iommu_bypass_supported()

[Oliver O'Halloran]

Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
---
 arch/powerpc/platforms/powernv/pci-ioda.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c 
b/arch/powerpc/platforms/powernv/pci-ioda.c
index 98d858999a2d..7e88de18ead6 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1801,13 +1801,11 @@ static bool pnv_pci_ioda_iommu_bypass_supported(struct 
pci_dev *pdev,
                u64 dma_mask)
 {
        struct pnv_phb *phb = pci_bus_to_pnvhb(pdev->bus);
-       struct pci_dn *pdn = pci_get_pdn(pdev);
-       struct pnv_ioda_pe *pe;
+       struct pnv_ioda_pe *pe = pnv_ioda_get_pe(pdev);
 
-       if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE))
+       if (WARN_ON(!pe))
                return false;
 
-       pe = &phb->ioda.pe_array[pdn->pe_number];
        if (pe->tce_bypass_enabled) {
                u64 top = pe->tce_bypass_base + memblock_end_of_DRAM() - 1;
                if (dma_mask >= top)
-- 
2.21.0