Commit 1ef04370 authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by Linus Torvalds
Browse files

asm-generic: remove ARCH_HAS_SG_CHAIN in scatterlist.h 



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: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 48c7cf47

arch/alpha/include/asm/scatterlist.h

+1 −3
Original line number Diff line number Diff line 
#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) */

arch/arm/include/asm/scatterlist.h

+0 −3
Original line number Diff line number Diff line
@@ -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 */

arch/ia64/include/asm/scatterlist.h

+2 −2
Original line number Diff line number Diff line 
#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 */

arch/microblaze/include/asm/scatterlist.h

+2 −2
Original line number Diff line number Diff line 
#define ISA_DMA_THRESHOLD	(~0UL)



#include <asm-generic/scatterlist.h>



#define ISA_DMA_THRESHOLD	(~0UL)

arch/powerpc/include/asm/scatterlist.h

+1 −0
Original line number Diff line number Diff line
@@ -15,5 +15,6 @@ 
#ifdef __powerpc64__

#define ISA_DMA_THRESHOLD	(~0UL)

#endif

#define ARCH_HAS_SG_CHAIN



#endif /* _ASM_POWERPC_SCATTERLIST_H */

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