powerpc/dart: iommu table cleanup

No need to set the device tree device_node pci node iommu pointer, its
only used for dlpar remove.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c
index 17cf15e..8e9e06a 100644 (file)
--- a/arch/powerpc/sysdev/dart_iommu.c
+++ b/arch/powerpc/sysdev/dart_iommu.c
@@ -312,17 +312,10 @@ static void pci_dma_dev_setup_dart(struct pci_dev *dev)
 
 static void pci_dma_bus_setup_dart(struct pci_bus *bus)
 {
-       struct device_node *dn;
-
        if (!iommu_table_dart_inited) {
                iommu_table_dart_inited = 1;
                iommu_table_dart_setup();
        }
-
-       dn = pci_bus_to_OF_node(bus);
-
-       if (dn)
-               PCI_DN(dn)->iommu_table = &iommu_table_dart;
 }
 
 static bool dart_device_on_pcie(struct device *dev)
@@ -373,7 +366,7 @@ void __init iommu_init_early_dart(void)
        if (dn == NULL) {
                dn = of_find_compatible_node(NULL, "dart", "u4-dart");
                if (dn == NULL)
-                       goto bail;
+                       return; /* use default direct_dma_ops */
                dart_is_u4 = 1;
        }