From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Vinod Koul <vinod.koul@intel.com>,
linux-kernel@vger.kernel.org,
Viresh Kumar <viresh.kumar@linaro.org>,
spear-devel <spear-devel@list.st.com>
Subject: [resend][PATCH 16/16] dma: dw_dmac: clear suspend bit during termination
Date: Wed, 9 Jan 2013 10:17:15 +0200 [thread overview]
Message-ID: <1357719435-29955-17-git-send-email-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <1357719435-29955-1-git-send-email-andriy.shevchenko@linux.intel.com>
From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
The DMA transfer could not be established if previously it was paused and
terminated. In that case the channel's suspend bit remains set that prevents to
transfer anything until channel is resumed.
The patch adds a code that clears the DWC_CFGL_CH_SUSP bit during termination.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
---
drivers/dma/dw_dmac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 6a8f8c7..c6ebea1 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1059,7 +1059,7 @@ static int dwc_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
dwc_chan_disable(dw, dwc);
- dwc->paused = false;
+ dwc_chan_resume(dwc);
/* active_list entries will end up before queued entries */
list_splice_init(&dwc->queue, &list);
--
1.7.10.4
next prev parent reply other threads:[~2013-01-09 8:19 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-07 12:54 dw_dmac patches Andy Shevchenko
2013-01-08 15:54 ` Vinod Koul
2013-01-09 8:16 ` [resend][PATCH 00/16] dw_dmac related patchset Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 01/16] dw_dmac: call .probe after we have a device in place Andy Shevchenko
2013-01-09 13:47 ` Vinod Koul
2013-01-09 14:56 ` Andy Shevchenko
2013-01-09 15:38 ` Vinod Koul
2013-01-09 18:04 ` Mika Westerberg
2013-01-12 12:28 ` Vinod Koul
2013-01-10 8:34 ` Viresh Kumar
2013-01-12 12:30 ` Vinod Koul
2013-01-09 8:17 ` [resend][PATCH 02/16] dw_dmac: absence of pdata isn't critical when autocfg is set Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 03/16] dmaengine: introduce is_slave_xfer function Andy Shevchenko
2013-01-09 13:50 ` Vinod Koul
2013-01-09 14:19 ` Viresh Kumar
2013-01-09 14:58 ` Andy Shevchenko
2013-01-09 15:10 ` Vinod Koul
2013-01-09 15:51 ` Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 04/16] dma: at_hdmac: check direction properly for cyclic transfers Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 05/16] dma: dw_dmac: check direction properly in dw_dma_cyclic_prep Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 06/16] dma: ep93xx_dma: reuse is_slave_xfer helper Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 07/16] dma: ipu_idmac: " Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 08/16] dma: ste_dma40: " Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 09/16] dw_dmac: store direction in the custom channel structure Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 10/16] dw_dmac: make usage of dw_dma_slave optional Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 11/16] dw_dmac: backlink to dw_dma in dw_dma_chan is superfluous Andy Shevchenko
2013-01-09 14:24 ` Vinod Koul
2013-01-09 15:02 ` Andy Shevchenko
2013-01-09 15:11 ` Vinod Koul
2013-01-09 8:17 ` [resend][PATCH 12/16] dw_dmac: check for mapping errors Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 13/16] dw_dmac: remove redundant check Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 14/16] dw_dmac: update tx_node_active in dwc_do_single_block Andy Shevchenko
2013-01-09 8:17 ` [resend][PATCH 15/16] dma: dw_dmac: add dwc_chan_pause and dwc_chan_resume Andy Shevchenko
2013-01-09 8:17 ` Andy Shevchenko [this message]
2013-01-09 14:18 ` [resend][PATCH 16/16] dma: dw_dmac: clear suspend bit during termination Vinod Koul
2013-01-09 15:07 ` Andy Shevchenko
2013-01-09 15:44 ` [resend][PATCH 00/16] dw_dmac related patchset Vinod Koul
2013-01-10 8:28 ` Andy Shevchenko
2013-01-09 11:26 ` dw_dmac patches Andy Shevchenko
2013-01-11 12:01 ` Andy Shevchenko
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