From 777fbc31447f111a1492c90fae2bc616f836d407 Mon Sep 17 00:00:00 2001
From: Jonas Jensen <jonas.jensen@gmail.com>
Date: Mon, 25 Aug 2014 16:22:32 +0200
Subject: [PATCH] net: moxa: synchronize DMA memory

DMA memory should be synchronized before data is passed
to/from controller.

Add dma_sync_single_for_cpu(.., DMA_FROM_DEVICE) to RX path
and dma_sync_single_for_device(.., DMA_TO_DEVICE) to TX path.

Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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