From: b29396@freescale.com (Dong Aisheng)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/1] ARM: mxs-dma: reset after disable channel
Date: Tue, 19 Jul 2011 12:09:56 +0800 [thread overview]
Message-ID: <1311048596-19932-1-git-send-email-b29396@freescale.com> (raw)
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>
---
drivers/dma/mxs-dma.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 88aad4f..5a24010 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -535,6 +535,7 @@ 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);
--
1.7.0.4
next reply other threads:[~2011-07-19 4:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-19 4:09 Dong Aisheng [this message]
2011-07-19 4:02 ` [PATCH 1/1] ARM: mxs-dma: reset after disable channel Shawn Guo
2011-07-19 8:21 ` Wolfram Sang
2011-07-19 8:45 ` Shawn Guo
2011-07-19 9:13 ` Wolfram Sang
2011-07-19 9:20 ` Dong Aisheng-B29396
2011-07-19 13:44 ` Koul, Vinod
2011-07-25 14:25 ` Vinod Koul
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