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asm-generic: remove ARCH_HAS_SG_CHAIN in scatterlist.h

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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@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
FUJITA Tomonori
2010-05-26 14:44:34 -07:00
committed by Linus Torvalds
parent 48c7cf4797
commit 1ef04370d8
8 changed files with 12 additions and 16 deletions
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arch/powerpc/include/asm/scatterlist.h
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@@ -15,5 +15,6 @@
#ifdef __powerpc64__
#define ISA_DMA_THRESHOLD (~0UL)
#endif
#define ARCH_HAS_SG_CHAIN
#endif /* _ASM_POWERPC_SCATTERLIST_H */