From 8a4134322bd429d24f71147eb59a47a981e8f63a Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Fri, 23 Dec 2011 09:30:47 +0100
Subject: common: DMA-mapping: add WRITE_COMBINE attribute

DMA_ATTR_WRITE_COMBINE specifies that writes to the mapping may be
buffered to improve performance. It will be used by the replacement for
ARM/ARV32 specific dma_alloc_writecombine() function.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
---
 include/linux/dma-attrs.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/linux/dma-attrs.h')

diff --git a/include/linux/dma-attrs.h b/include/linux/dma-attrs.h
index 71ad34eca6e3..ada61e1abf29 100644
--- a/include/linux/dma-attrs.h
+++ b/include/linux/dma-attrs.h
@@ -13,6 +13,7 @@
 enum dma_attr {
 	DMA_ATTR_WRITE_BARRIER,
 	DMA_ATTR_WEAK_ORDERING,
+	DMA_ATTR_WRITE_COMBINE,
 	DMA_ATTR_MAX,
 };
 
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