[PATCH] arm64: Add ARCH_HAS_SG_CHAIN

[Laura Abbott]

It's useful to be able to chain scatterlists together for very large
scatter allocations. Define ARCH_HAS_SG_CHAIN to let this happen.

Signed-off-by: Laura Abbott <lauraa at codeaurora.org>
---
 arch/arm64/include/asm/scatterlist.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 arch/arm64/include/asm/scatterlist.h

diff --git a/arch/arm64/include/asm/scatterlist.h b/arch/arm64/include/asm/scatterlist.h
new file mode 100644
index 0000000..7b2602a
--- /dev/null
+++ b/arch/arm64/include/asm/scatterlist.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __ASM_SCATTERLIST_H
+#define __ASM_SCATTERLIST_H
+
+#include <asm-generic/scatterlist.h>
+
+#define ARCH_HAS_SG_CHAIN
+
+#endif
-- 
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