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powerpc/powernv: Fix it_ops::get() callback to return in cpu endian

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The iommu_table_ops callbacks are declared CPU endian as they take and
return "unsigned long"; underlying hardware tables are big-endian.

However get() was missing be64_to_cpu(), this adds the missing conversion.

The only caller of this is crash dump at arch/powerpc/kernel/iommu.c,
iommu_table_clear() which only compares TCE to zero so this change
should not cause behavioral change.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alexey Kardashevskiy 2017-02-21 13:38:54 +11:00 • committed by Michael Ellerman
parent b3a7864c6f
commit 81d5fe1a3b
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/platforms/powernv/pci.c
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@ -758,7 +758,7 @@ void pnv_tce_free(struct iommu_table *tbl, long index, long npages)
unsigned long pnv_tce_get(struct iommu_table *tbl, long index) unsigned long pnv_tce_get(struct iommu_table *tbl, long index)
{ {
return *(pnv_tce(tbl, index - tbl->it_offset)); return be64_to_cpu(*(pnv_tce(tbl, index - tbl->it_offset)));
} }
struct iommu_table *pnv_pci_table_alloc(int nid) struct iommu_table *pnv_pci_table_alloc(int nid)