[PATCH] scatterlist: define SG chain for arm architecture

[Fernando Guzman Lugo]

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 at ti.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