[patch 2.6.13] swiotlb: BUG() for DMA_NONE in sync_single

["John W. Linville" <linville@tuxdriver.com>]

Call BUG() if DMA_NONE is passed-in as direction for sync_single.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

 lib/swiotlb.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -315,13 +315,13 @@ sync_single(struct device *hwdev, char *
 	case SYNC_FOR_CPU:
 		if (likely(dir == DMA_FROM_DEVICE || dma == DMA_BIDIRECTIONAL))
 			memcpy(buffer, dma_addr, size);
-		else if (dir != DMA_TO_DEVICE && dir != DMA_NONE)
+		else if (dir != DMA_TO_DEVICE)
 			BUG();
 		break;
 	case SYNC_FOR_DEVICE:
 		if (likely(dir == DMA_TO_DEVICE || dma == DMA_BIDIRECTIONAL))
 			memcpy(dma_addr, buffer, size);
-		else if (dir != DMA_FROM_DEVICE && dir != DMA_NONE)
+		else if (dir != DMA_FROM_DEVICE)
 			BUG();
 		break;
 	default:
-- 
John W. Linville
linville@tuxdriver.com
-
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