[PATCH -mm 01/12] asm-generic: remove ARCH_HAS_SG_CHAIN in scatterlist.h

From: FUJITA Tomonori
Date: Mon Apr 05 2010 - 19:54:53 EST


There are more architectures that don't support ARCH_HAS_SG_CHAIN than
those that support it. This removes removes ARCH_HAS_SG_CHAIN in
asm-generic/scatterlist.h and lets arhictectures to define it.

It's clearer than defining ARCH_HAS_SG_CHAIN asm-generic/scatterlist.h
and undefing it in arhictectures that don't support it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
---
arch/alpha/include/asm/scatterlist.h | 4 +---
arch/arm/include/asm/scatterlist.h | 3 ---
arch/ia64/include/asm/scatterlist.h | 4 ++--
arch/microblaze/include/asm/scatterlist.h | 4 ++--
arch/powerpc/include/asm/scatterlist.h | 1 +
arch/sparc/include/asm/scatterlist.h | 5 +++--
arch/x86/include/asm/scatterlist.h | 5 +++--
include/asm-generic/scatterlist.h | 2 --
8 files changed, 12 insertions(+), 16 deletions(-)

diff --git a/arch/alpha/include/asm/scatterlist.h b/arch/alpha/include/asm/scatterlist.h
index 85a0ef2..5728c52 100644
--- a/arch/alpha/include/asm/scatterlist.h
+++ b/arch/alpha/include/asm/scatterlist.h
@@ -1,10 +1,8 @@
#ifndef _ALPHA_SCATTERLIST_H
#define _ALPHA_SCATTERLIST_H

-#define ISA_DMA_THRESHOLD (~0UL)
-
#include <asm-generic/scatterlist.h>

-#undef ARCH_HAS_SG_CHAIN
+#define ISA_DMA_THRESHOLD (~0UL)

#endif /* !(_ALPHA_SCATTERLIST_H) */
diff --git a/arch/arm/include/asm/scatterlist.h b/arch/arm/include/asm/scatterlist.h
index bcda59f..2f87870 100644
--- a/arch/arm/include/asm/scatterlist.h
+++ b/arch/arm/include/asm/scatterlist.h
@@ -3,9 +3,6 @@

#include <asm/memory.h>
#include <asm/types.h>
-
#include <asm-generic/scatterlist.h>

-#undef ARCH_HAS_SG_CHAIN
-
#endif /* _ASMARM_SCATTERLIST_H */
diff --git a/arch/ia64/include/asm/scatterlist.h b/arch/ia64/include/asm/scatterlist.h
index d8e9896..f299a4f 100644
--- a/arch/ia64/include/asm/scatterlist.h
+++ b/arch/ia64/include/asm/scatterlist.h
@@ -1,6 +1,7 @@
#ifndef _ASM_IA64_SCATTERLIST_H
#define _ASM_IA64_SCATTERLIST_H

+#include <asm-generic/scatterlist.h>
/*
* It used to be that ISA_DMA_THRESHOLD had something to do with the
* DMA-limits of ISA-devices. Nowadays, its only remaining use (apart
@@ -10,7 +11,6 @@
* that's 4GB - 1.
*/
#define ISA_DMA_THRESHOLD 0xffffffff
-
-#include <asm-generic/scatterlist.h>
+#define ARCH_HAS_SG_CHAIN

#endif /* _ASM_IA64_SCATTERLIST_H */
diff --git a/arch/microblaze/include/asm/scatterlist.h b/arch/microblaze/include/asm/scatterlist.h
index be44d94..dc4a890 100644
--- a/arch/microblaze/include/asm/scatterlist.h
+++ b/arch/microblaze/include/asm/scatterlist.h
@@ -1,3 +1,3 @@
-#define ISA_DMA_THRESHOLD (~0UL)
-
#include <asm-generic/scatterlist.h>
+
+#define ISA_DMA_THRESHOLD (~0UL)
diff --git a/arch/powerpc/include/asm/scatterlist.h b/arch/powerpc/include/asm/scatterlist.h
index 4ae35da..34cc78f 100644
--- a/arch/powerpc/include/asm/scatterlist.h
+++ b/arch/powerpc/include/asm/scatterlist.h
@@ -15,5 +15,6 @@
#ifdef __powerpc64__
#define ISA_DMA_THRESHOLD (~0UL)
#endif
+#define ARCH_HAS_SG_CHAIN

#endif /* _ASM_POWERPC_SCATTERLIST_H */
diff --git a/arch/sparc/include/asm/scatterlist.h b/arch/sparc/include/asm/scatterlist.h
index 69d21bb..433e45f 100644
--- a/arch/sparc/include/asm/scatterlist.h
+++ b/arch/sparc/include/asm/scatterlist.h
@@ -1,8 +1,9 @@
#ifndef _SPARC_SCATTERLIST_H
#define _SPARC_SCATTERLIST_H

-#define ISA_DMA_THRESHOLD (~0UL)
-
#include <asm-generic/scatterlist.h>

+#define ISA_DMA_THRESHOLD (~0UL)
+#define ARCH_HAS_SG_CHAIN
+
#endif /* !(_SPARC_SCATTERLIST_H) */
diff --git a/arch/x86/include/asm/scatterlist.h b/arch/x86/include/asm/scatterlist.h
index 75af592..fb0b187 100644
--- a/arch/x86/include/asm/scatterlist.h
+++ b/arch/x86/include/asm/scatterlist.h
@@ -1,8 +1,9 @@
#ifndef _ASM_X86_SCATTERLIST_H
#define _ASM_X86_SCATTERLIST_H

-#define ISA_DMA_THRESHOLD (0x00ffffff)
-
#include <asm-generic/scatterlist.h>

+#define ISA_DMA_THRESHOLD (0x00ffffff)
+#define ARCH_HAS_SG_CHAIN
+
#endif /* _ASM_X86_SCATTERLIST_H */
diff --git a/include/asm-generic/scatterlist.h b/include/asm-generic/scatterlist.h
index 5e08794..5de0735 100644
--- a/include/asm-generic/scatterlist.h
+++ b/include/asm-generic/scatterlist.h
@@ -31,6 +31,4 @@ struct scatterlist {
#define sg_dma_len(sg) ((sg)->length)
#endif

-#define ARCH_HAS_SG_CHAIN
-
#endif /* __ASM_GENERIC_SCATTERLIST_H */
--
1.7.0

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