arch/sh: add option to skip DMA sync as a part of mapping
authorAlexander Duyck <alexander.h.duyck@intel.com>
Wed, 14 Dec 2016 23:05:12 +0000 (15:05 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 15 Dec 2016 00:04:07 +0000 (16:04 -0800)
commita08120017d7d659719d446fb036d500fa9b1e6f9
tree6b3f1b964478e1c8f70a0b85cb4b557c762da219
parent6f774809612d1f1fc800b452ee1ef447a277ec9d
arch/sh: add option to skip DMA sync as a part of mapping

This change allows us to pass DMA_ATTR_SKIP_CPU_SYNC which allows us to
avoid invoking cache line invalidation if the driver will just handle it
via a sync_for_cpu or sync_for_device call.

Link: http://lkml.kernel.org/r/20161110113539.76501.6539.stgit@ahduyck-blue-test.jf.intel.com
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/sh/kernel/dma-nommu.c