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Message-ID: <b4e86c79390324e94ef89d71d19e0d6693829b16.1303896567.git.viresh.kumar@st.com>
Date:	Wed, 27 Apr 2011 15:06:55 +0530
From:	Viresh Kumar <viresh.kumar@...com>
To:	<vinod.koul@...el.com>, <dan.j.williams@...el.com>
Cc:	<linux-kernel@...r.kernel.org>, <armando.visconti@...com>,
	<shiraz.hashim@...com>, <linux-arm-kernel@...ts.infradead.org>,
	<viresh.linux@...il.com>, Viresh Kumar <viresh.kumar@...com>
Subject: [PATCH V3 5/7] 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 3285ae9..964d2d6 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -876,7 +876,11 @@ 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;
 }
-- 
1.7.3.4

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