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powerpc/pseries: iommu cleanup

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No need to initialize per-cpu pointer to NULL, it is the default.

Direct dma ops and no setup are the defaults, no need to set for
iommu-off.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Nishanth Aravamudan 2010-10-18 07:27:03 +00:00 committed by Benjamin Herrenschmidt
parent 34c4d01255
commit a8daac8a51
1 changed files with 2 additions and 7 deletions
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9
arch/powerpc/platforms/pseries/iommu.c
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@ -140,7 +140,7 @@ static int tce_build_pSeriesLP(struct iommu_table *tbl, long tcenum,
return ret;
}
static DEFINE_PER_CPU(u64 *, tce_page) = NULL;
static DEFINE_PER_CPU(u64 *, tce_page);
static int tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
long npages, unsigned long uaddr,
@ -589,13 +589,8 @@ static struct notifier_block iommu_reconfig_nb = {
/* These are called very early. */
void iommu_init_early_pSeries(void)
{
if (of_chosen && of_get_property(of_chosen, "linux,iommu-off", NULL)) {
/* Direct I/O, IOMMU off */
ppc_md.pci_dma_dev_setup = NULL;
ppc_md.pci_dma_bus_setup = NULL;
set_pci_dma_ops(&dma_direct_ops);
if (of_chosen && of_get_property(of_chosen, "linux,iommu-off", NULL))
return;
}
if (firmware_has_feature(FW_FEATURE_LPAR)) {
if (firmware_has_feature(FW_FEATURE_MULTITCE)) {