powerpc/iommu: Update constant names to reflect their hardcoded page size

The powerpc iommu uses a hardcoded page size of 4K. This patch changes
the name of the IOMMU_PAGE_* macros to reflect the hardcoded values. A
future patch will use the existing names to support dynamic page
sizes.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c
index e4897523de41..5cfe3dbfc4a0 100644
--- a/arch/powerpc/kernel/dma-iommu.c
+++ b/arch/powerpc/kernel/dma-iommu.c
@@ -83,10 +83,10 @@ static int dma_iommu_dma_supported(struct device *dev, u64 mask)
                 return 0;
         }
 
-        if (tbl->it_offset > (mask >> IOMMU_PAGE_SHIFT)) {
+        if (tbl->it_offset > (mask >> IOMMU_PAGE_SHIFT_4K)) {
                 dev_info(dev, "Warning: IOMMU offset too big for device mask\n");
                 dev_info(dev, "mask: 0x%08llx, table offset: 0x%08lx\n",
-                                mask, tbl->it_offset << IOMMU_PAGE_SHIFT);
+                                mask, tbl->it_offset << IOMMU_PAGE_SHIFT_4K);
                 return 0;
         } else
                 return 1;