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Message-ID: <6264b8d24bf15b8aaff86c4d3fe8df5f777c552c.1303123511.git.viresh.kumar@st.com>
Date:	Mon, 18 Apr 2011 16:20:03 +0530
From:	Viresh Kumar <viresh.kumar@...com>
To:	<linux-kernel@...r.kernel.org>, <vinod.koul@...el.com>,
	<dan.j.williams@...el.com>
Cc:	<linux-arm-kernel@...ts.infradead.org>, <armando.visconti@...com>,
	<shiraz.hashim@...com>, <amit.goel@...com>,
	<viresh.linux@...il.com>, <jamie@...ieiles.com>,
	<linux@....linux.org.uk>, Viresh Kumar <viresh.kumar@...com>
Subject: [PATCH 5/6] dmaengine/dw_dmac: set residue as total len in dwc_tx_status if status is !DMA_SUCCESS

If transfer status is !=DMA_SUCCESS, return total transfer len as residue,
instead of zero.

Signed-off-by: Viresh Kumar <viresh.kumar@...com>
---
 drivers/dma/dw_dmac.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 9d8ed35..92f4cb0 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -870,7 +870,11 @@ dwc_tx_status(struct dma_chan *chan,
 		ret = dma_async_is_complete(cookie, last_complete, last_used);
 	}
 
-	dma_set_tx_state(txstate, last_complete, last_used, 0);
+	if (ret != DMA_SUCCESS)
+		dma_set_tx_state(txstate, last_complete, last_used,
+				dwc_first_active(dwc)->len);
+	else
+		dma_set_tx_state(txstate, last_complete, last_used, 0);
 
 	return ret;
 }
-- 
1.7.2.2

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