From 87799ebab760dd1460f6e4193d4f71ba416d1451 Mon Sep 17 00:00:00 2001
From: Christof Schmitt <christof.schmitt@de.ibm.com>
Date: Mon, 25 Oct 2010 16:10:10 +0200
Subject: [PATCH] [S390] set ARCH_HAS_SG_CHAIN for s390

Set ARCH_HAS_SG_CHAIN for scatter lists on s390. Without this flag the
SCSI code limits the maximum number of segments, so set it to make
proper use of the FCP channel hardware.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 arch/s390/include/asm/scatterlist.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/s390/include/asm/scatterlist.h b/arch/s390/include/asm/scatterlist.h
index 35d786f..6d45ef6 100644
--- a/arch/s390/include/asm/scatterlist.h
+++ b/arch/s390/include/asm/scatterlist.h
@@ -1 +1,3 @@
 #include <asm-generic/scatterlist.h>
+
+#define ARCH_HAS_SG_CHAIN
-- 
2.7.4