netdev - [PATCH v2 08/46] net/wireless: b43: fix DMA direction for RX buffers

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Date:	Mon, 11 Jul 2011 02:52:47 +0200 (CEST)
From:	Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:	netdev@...r.kernel.org
Cc:	Stefano Brivio <stefano.brivio@...imi.it>,
	linux-wireless@...r.kernel.org
Subject: [PATCH v2 08/46] net/wireless: b43: fix DMA direction for RX buffers

Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
 drivers/net/wireless/b43/dma.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c
index 7a09a46..15b11f0 100644
--- a/drivers/net/wireless/b43/dma.c
+++ b/drivers/net/wireless/b43/dma.c
@@ -336,8 +336,9 @@ static inline
 		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
 					 buf, len, DMA_TO_DEVICE);
 	} else {
+		/* DMA_BIDIRECTIONAL because of b43_poison_rx_buffer() */
 		dmaaddr = dma_map_single(ring->dev->dev->dma_dev,
-					 buf, len, DMA_FROM_DEVICE);
+					 buf, len, DMA_BIDIRECTIONAL);
 	}
 
 	return dmaaddr;
@@ -352,7 +353,7 @@ static inline
 				 addr, len, DMA_TO_DEVICE);
 	} else {
 		dma_unmap_single(ring->dev->dev->dma_dev,
-				 addr, len, DMA_FROM_DEVICE);
+				 addr, len, DMA_BIDIRECTIONAL);
 	}
 }
 
@@ -362,7 +363,7 @@ static inline
 {
 	B43_WARN_ON(ring->tx);
 	dma_sync_single_for_cpu(ring->dev->dev->dma_dev,
-				    addr, len, DMA_FROM_DEVICE);
+				    addr, len, DMA_BIDIRECTIONAL);
 }
 
 static inline
@@ -371,7 +372,7 @@ static inline
 {
 	B43_WARN_ON(ring->tx);
 	dma_sync_single_for_device(ring->dev->dev->dma_dev,
-				   addr, len, DMA_FROM_DEVICE);
+				   addr, len, DMA_BIDIRECTIONAL);
 }
 
 static inline
-- 
1.7.5.4

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