tree 297bf8eb393a33f87452a2421b28225b3714a3af
parent d6d211db37e75de2ddc3a4f979038c40df7cc79c
author Ezequiel Garcia <ezequiel.garcia@free-electrons.com> 1400706155 -0700
committer Dan Williams <dan.j.williams@intel.com> 1400706155 -0700

dma: mv_xor: Flush descriptors before activating a channel

We need to use writel() instead of writel_relaxed() when starting
a channel, to ensure all the descriptors have been flushed before
the activation.

While at it, remove the unneeded read-modify-write and make the
code simpler.

Cc: <stable@vger.kernel.org>
Signed-off-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>