Commit 18e98307 authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by Linus Torvalds
Browse files

asm-generic: add NEED_SG_DMA_LENGTH to define sg_dma_len() 



There are only two ways to define sg_dma_len(); use sg->dma_length or
sg->length.  This patch introduces NEED_SG_DMA_LENGTH that enables
architectures to choose sg->dma_length or sg->length.

Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 204f3a04

arch/ia64/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -56,6 +56,9 @@ config MMU 
config NEED_DMA_MAP_STATE

	def_bool y



config NEED_SG_DMA_LENGTH

	def_bool y



config SWIOTLB

       bool

arch/sh/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -186,6 +186,9 @@ config DMA_NONCOHERENT 
config NEED_DMA_MAP_STATE

	def_bool DMA_NONCOHERENT



config NEED_SG_DMA_LENGTH

	def_bool y



source "init/Kconfig"



source "kernel/Kconfig.freezer"

arch/sparc/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -133,6 +133,9 @@ 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 if SPARC32

arch/sparc/include/asm/scatterlist.h

+0 −2
Original line number Diff line number Diff line 
#ifndef _SPARC_SCATTERLIST_H

#define _SPARC_SCATTERLIST_H



#define sg_dma_len(sg)     	((sg)->dma_length)



#define ISA_DMA_THRESHOLD	(~0UL)



#include <asm-generic/scatterlist.h>

arch/x86/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -109,6 +109,9 @@ config SBUS 
config NEED_DMA_MAP_STATE

       def_bool (X86_64 || DMAR || DMA_API_DEBUG)



config NEED_SG_DMA_LENGTH

	def_bool X86_64



config GENERIC_ISA_DMA

	def_bool y

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