linux-kernel - [PATCH -mm 5/5] alpha: use asm-generic/scatterlist.h

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Date:	Sun,  4 Apr 2010 23:25:53 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, fujita.tomonori@....ntt.co.jp,
	arnd@...db.de, Richard Henderson <rth@...ddle.net>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Matt Turner <mattst88@...il.com>
Subject: [PATCH -mm 5/5] alpha: use asm-generic/scatterlist.h

Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc: Richard Henderson <rth@...ddle.net>
Cc: Ivan Kokshaysky <ink@...assic.park.msu.ru>
Cc: Matt Turner <mattst88@...il.com>
---
 arch/alpha/Kconfig                   |    3 +++
 arch/alpha/include/asm/scatterlist.h |   21 +++------------------
 2 files changed, 6 insertions(+), 18 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index d1a1d83..ffc8253 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -58,6 +58,9 @@ config ZONE_DMA
 config NEED_DMA_MAP_STATE
        def_bool y
 
+config NEED_SG_DMA_LENGTH
+	def_bool y
+
 config GENERIC_ISA_DMA
 	bool
 	default y
diff --git a/arch/alpha/include/asm/scatterlist.h b/arch/alpha/include/asm/scatterlist.h
index 440747c..85a0ef2 100644
--- a/arch/alpha/include/asm/scatterlist.h
+++ b/arch/alpha/include/asm/scatterlist.h
@@ -1,25 +1,10 @@
 #ifndef _ALPHA_SCATTERLIST_H
 #define _ALPHA_SCATTERLIST_H
 
-#include <asm/page.h>
-#include <asm/types.h>
-  
-struct scatterlist {
-#ifdef CONFIG_DEBUG_SG
-	unsigned long sg_magic;
-#endif
-	unsigned long page_link;
-	unsigned int offset;
-
-	unsigned int length;
-
-	dma_addr_t dma_address;
-	__u32 dma_length;
-};
+#define ISA_DMA_THRESHOLD (~0UL)
 
-#define sg_dma_address(sg)	((sg)->dma_address)
-#define sg_dma_len(sg)		((sg)->dma_length)
+#include <asm-generic/scatterlist.h>
 
-#define ISA_DMA_THRESHOLD (~0UL)
+#undef ARCH_HAS_SG_CHAIN
 
 #endif /* !(_ALPHA_SCATTERLIST_H) */
-- 
1.7.0

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