[PATCH] iommu-api: Add missing header file

[Laura Abbott]

If CONFIG_IOMMU_API is not defined some functions will just
return -ENODEV. Add errno.h for the definition of ENODEV.

Signed-off-by: Laura Abbott <lauraa@xxxxxxxxxxxxxx>
---
 include/linux/iommu.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 0a2ba40..9940319 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -19,6 +19,8 @@
 #ifndef __LINUX_IOMMU_H
 #define __LINUX_IOMMU_H

+#include <linux/errno.h>
+
 #define IOMMU_READ	(1)
 #define IOMMU_WRITE	(2)
 #define IOMMU_CACHE	(4) /* DMA cache coherency */
--
1.7.3.3

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