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