linux-kernel - spi: spi-davinci: Fix direction in dma_map

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Message-ID: <8339377.qGdTICXBF1@p2400>
Date:	Thu, 18 Apr 2013 21:44:21 +0200
From:	Christian Eggers <ceggers@....de>
To:	Matt Porter <mporter@...com>
Cc:	linux-kernel@...r.kernel.org,
	spi-devel-general@...ts.sourceforge.net
Subject: spi: spi-davinci: Fix direction in dma_map_single()

Commit 048177ce3b3962852fd34a7e04938959271c7e70 (spi: spi-davinci: 
convert to DMA engine API) introduced a regression: dma_map_single() 
is called with direction DMA_FROM_DEVICE for rx and for tx.

Signed-off-by: Christian Eggers <ceggers@....de>
Cc: stable@...r.kernel.org
---
--- drivers/spi/spi-davinci.c.orig	2013-04-18 20:54:02.728719412 +0200
+++ drivers/spi/spi-davinci.c	2013-04-18 20:54:51.900623956 +0200
@@ -608,7 +608,7 @@ static int davinci_spi_bufs(struct spi_d
 		else
 			buf = (void *)t->tx_buf;
 		t->tx_dma = dma_map_single(&spi->dev, buf,
-				t->len, DMA_FROM_DEVICE);
+				t->len, DMA_TO_DEVICE);
 		if (!t->tx_dma) {
 			ret = -EFAULT;
 			goto err_tx_map;



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