linux-kernel - [PATCH 10/12] ipu_idmac: re-use dma_cookie

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Date:	Mon, 27 May 2013 15:14:40 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	linux-kernel@...r.kernel.org, Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <djbw@...com>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Shawn Guo <shawn.guo@...aro.org>
Subject: [PATCH 10/12] ipu_idmac: re-use dma_cookie_status()

It's better to use generic dma_cookie_status() that allows user to get standard
possible return codes independently of the DMAC driver in charge.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Shawn Guo <shawn.guo@...aro.org>
---
 drivers/dma/ipu/ipu_idmac.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
index d39c2cd..608d4a2 100644
--- a/drivers/dma/ipu/ipu_idmac.c
+++ b/drivers/dma/ipu/ipu_idmac.c
@@ -1593,10 +1593,7 @@ static void idmac_free_chan_resources(struct dma_chan *chan)
 static enum dma_status idmac_tx_status(struct dma_chan *chan,
 		       dma_cookie_t cookie, struct dma_tx_state *txstate)
 {
-	dma_set_tx_state(txstate, chan->completed_cookie, chan->cookie, 0);
-	if (cookie != chan->cookie)
-		return DMA_ERROR;
-	return DMA_SUCCESS;
+	return dma_cookie_status(chan, cookie, txstate);
 }
 
 static int __init ipu_idmac_init(struct ipu *ipu)
-- 
1.8.2.rc0.22.gb3600c3

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