From 81d5fe1a3b1acfaadc7921d08609e097c6345d7f Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Tue, 21 Feb 2017 13:38:54 +1100 Subject: [PATCH] powerpc/powernv: Fix it_ops::get() callback to return in cpu endian 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 Reviewed-by: David Gibson Acked-by: Gavin Shan Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/powernv/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index eb835e9..a43f22d 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -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) { - 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) -- 2.7.4