arch/m68k: add option to skip DMA sync as a part of mapping
authorAlexander Duyck <alexander.h.duyck@intel.com>
Wed, 14 Dec 2016 23:04:49 +0000 (15:04 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 15 Dec 2016 00:04:07 +0000 (16:04 -0800)
commit5140d2344f1036dadffbb949a60af971b6dde0d3
treea333df84f739fff1c8593328b23196ec5b9bb06b
parentb8a346dd472af45e1ee8cbc77101dad0b836210b
arch/m68k: 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
later via a sync_for_cpu or sync_for_device call.

Link: http://lkml.kernel.org/r/20161110113457.76501.77603.stgit@ahduyck-blue-test.jf.intel.com
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/m68k/kernel/dma.c