dma-mapping: remove dma_is_consistent API
authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Wed, 11 Aug 2010 01:03:25 +0000 (18:03 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Aug 2010 15:59:21 +0000 (08:59 -0700)
commit3b9c6c11f519718d618f5d7c9508daf78b207f6f
tree6c99992e25b9305fbe3977dff30f5eeb445f25e0
parentd80e0d96a328cc864a1cb359f545a6ed0c61812d
dma-mapping: remove dma_is_consistent API

Architectures implement dma_is_consistent() in different ways (some
misinterpret the definition of API in DMA-API.txt).  So it hasn't been so
useful for drivers.  We have only one user of the API in tree.  Unlikely
out-of-tree drivers use the API.

Even if we fix dma_is_consistent() in some architectures, it doesn't look
useful at all.  It was invented long ago for some old systems that can't
allocate coherent memory at all.  It's better to export only APIs that are
definitely necessary for drivers.

Let's remove this API.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
22 files changed:
Documentation/DMA-API.txt
arch/alpha/include/asm/dma-mapping.h
arch/arm/include/asm/dma-mapping.h
arch/avr32/include/asm/dma-mapping.h
arch/blackfin/include/asm/dma-mapping.h
arch/cris/include/asm/dma-mapping.h
arch/frv/include/asm/dma-mapping.h
arch/ia64/include/asm/dma-mapping.h
arch/m68k/include/asm/dma-mapping.h
arch/microblaze/include/asm/dma-mapping.h
arch/mips/include/asm/dma-mapping.h
arch/mips/mm/dma-default.c
arch/mn10300/include/asm/dma-mapping.h
arch/parisc/include/asm/dma-mapping.h
arch/powerpc/include/asm/dma-mapping.h
arch/sh/include/asm/dma-mapping.h
arch/sparc/include/asm/dma-mapping.h
arch/tile/include/asm/dma-mapping.h
arch/um/include/asm/dma-mapping.h
arch/x86/include/asm/dma-mapping.h
arch/xtensa/include/asm/dma-mapping.h
include/asm-generic/dma-mapping-broken.h