From 702e94d66b555622ca6830de3095b5f0bb2ff6d7 Mon Sep 17 00:00:00 2001
From: Markus Pargmann <mpa@pengutronix.de>
Date: Tue, 29 Oct 2013 08:47:47 +0100
Subject: [PATCH] dma: mxs-dma: Fix channel reset hardware bug

This is no official errata, but I noticed that the channel reset may
stop working if the DMA state engine is in the READ_FLUSH state.

This patch uses the channel debug1 register to wait for the DMA
statemachine to leave the READ_FLUSH state. After that we can continue
to reset the channel.

Tested on i.MX28.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
Reading git-format-patch failed