[PATCH] ARM: iommu: Include linux/kref.h in asm/dma-iommu.h

The dma_iommu_mapping structure defined in asm/dma-iommu.h embeds a
struct kref, include the appropriate header file.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 arch/arm/include/asm/dma-iommu.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/dma-iommu.h b/arch/arm/include/asm/dma-iommu.h
index 799b094..666d8a8 100644
--- a/arch/arm/include/asm/dma-iommu.h
+++ b/arch/arm/include/asm/dma-iommu.h

@@ -7,6 +7,7 @@
 #include <linux/scatterlist.h>
 #include <linux/dma-debug.h>
 #include <linux/kmemcheck.h>
+#include <linux/kref.h>
 
 struct dma_iommu_mapping {
 	/* iommu specific data */

-- 
1.7.8.6