linux-kernel - [PATCH] scatterlist: define SG chain for arm architecture

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Date:	Thu, 30 Sep 2010 22:22:34 -0500
From:	Fernando Guzman Lugo <x0095840@...com>
To:	<tony@...mide.com>
Cc:	<Hiroshi.DOYU@...ia.com>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	Fernando Guzman Lugo <x0095840@...com>
Subject: [PATCH] scatterlist: define SG chain for arm architecture

Define SG chain for ARM architecture in order to work
with big buffers. This patch is needed in order to
iovmm users can pass a big buffer to map it and ARM
architecture has not issues using SG chain.

This change was suggested by FUJITA Tomonori.

Signed-off-by: Fernando Guzman Lugo <x0095840@...com>
---
 arch/arm/include/asm/scatterlist.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/scatterlist.h b/arch/arm/include/asm/scatterlist.h
index 2f87870..3de0a0b 100644
--- a/arch/arm/include/asm/scatterlist.h
+++ b/arch/arm/include/asm/scatterlist.h
@@ -5,4 +5,6 @@
 #include <asm/types.h>
 #include <asm-generic/scatterlist.h>
 
+#define ARCH_HAS_SG_CHAIN
+
 #endif /* _ASMARM_SCATTERLIST_H */
-- 
1.6.3.3

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