Additions to dma API with some small cleanups.
Signed-off-by: NRichard Hirst <rhirst@levanta.com>
Signed-off-by: NRoman Zippel <zippel@linux-m68k.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>