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powerpc/pasemi: Clean up pasemi iommu table initializations 

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 <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Nishanth Aravamudan 2010-10-18 07:27:00 +00:00 committed by Benjamin Herrenschmidt
parent 6d283d782f
commit 2f9c9be2ff
1 changed files with 1 additions and 18 deletions
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19
arch/powerpc/platforms/pasemi/iommu.c
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@ -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);