From: Dong Aisheng <b29396@freescale.com>
Date: Tue, 19 Jul 2011 04:09:56 +0000 (+0800)
Subject: ARM: mxs-dma: reset after disable channel
X-Git-Tag: next-20110727~33^2~11
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a62bae98a93e6c4d53b1e6c20715e94b4a5aca3c;p=karo-tx-linux.git

ARM: mxs-dma: reset after disable channel

We met some channels in abnormal state after disable.
Reset it to get a clean state.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index f22a237b7dd6..be641cbd36fc 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -537,6 +537,7 @@ static int mxs_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
 	switch (cmd) {
 	case DMA_TERMINATE_ALL:
 		mxs_dma_disable_chan(mxs_chan);
+		mxs_dma_reset_chan(mxs_chan);
 		break;
 	case DMA_PAUSE:
 		mxs_dma_pause_chan(mxs_chan);