From 817820b0226a1376f0fc68827ab8e42d86431117 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Wed, 24 Jun 2015 15:25:31 +1000
Subject: [PATCH] powerpc/iommu: Support "hybrid" iommu/direct DMA ops for
 coherent_mask < dma_mask

This patch adds the ability to the DMA direct ops to fallback to the IOMMU
ops for coherent alloc/free if the coherent mask of the device isn't
suitable for accessing the direct DMA space and the device also happens
to have an active IOMMU table.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
Reading git-format-patch failed