No need for empty helpers with iommu off, the ppc_md hooks are optional.
The direct_dma_ops are the default pci_dma_ops, so no need to set in the
them iommu off case.
No need to set the device tree device_node pci node iommu pointer, its
only used for dlpar remove.
Signed-off-by: Milton Miller <milt...@bga.com>
Signed-off-by: Nishanth Aravamudan <n...@us.ibm.com>
---
arch/powerpc/platforms/pasemi/iommu.c | 19 +------------------
1 files changed, 1 insertions(+), 18 deletions(-)
diff --git a/arch/powerpc/platforms/pasemi/iommu.c
b/arch/powerpc/platforms/pasemi/iommu.c
index 1f9fb2c..14943ef 100644
--- a/arch/powerpc/platforms/pasemi/iommu.c
+++ b/arch/powerpc/platforms/pasemi/iommu.c
@@ -156,20 +156,12 @@ static void iommu_table_iobmap_setup(void)
static void pci_dma_bus_setup_pasemi(struct pci_bus *bus)
{
- struct device_node *dn;
-
pr_debug("pci_dma_bus_setup, bus %p, bus->self %p\n", bus, bus->self);
if (!iommu_table_iobmap_inited) {
iommu_table_iobmap_inited = 1;
iommu_table_iobmap_setup();
}
-
- dn = pci_bus_to_OF_node(bus);
-
- if (dn)
- PCI_DN(dn)->iommu_table = &iommu_table_iobmap;
-
}
@@ -192,9 +184,6 @@ static void pci_dma_dev_setup_pasemi(struct pci_dev *dev)
set_iommu_table_base(&dev->dev, &iommu_table_iobmap);
}
-static void pci_dma_bus_setup_null(struct pci_bus *b) { }
-static void pci_dma_dev_setup_null(struct pci_dev *d) { }
-
int __init iob_init(struct device_node *dn)
{
unsigned long tmp;
@@ -251,14 +240,8 @@ void __init iommu_init_early_pasemi(void)
iommu_off = of_chosen &&
of_get_property(of_chosen, "linux,iommu-off", NULL);
#endif
- if (iommu_off) {
- /* Direct I/O, IOMMU off */
- ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_null;
- ppc_md.pci_dma_bus_setup = pci_dma_bus_setup_null;
- set_pci_dma_ops(&dma_direct_ops);
-
+ if (iommu_off)
return;
- }
iob_init(NULL);
--
1.7.0.4
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