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

Grant Grundler
2005-09-12T20:23:33Z

On Mon, Sep 12, 2005 at 03:53:56PM -0400, John W. Linville wrote:
> Call BUG() if DMA_NONE is passed-in as direction for sync_single.
>
> Signed-off-by: John W. Linville <linville@tuxdriver.com>

Acked-by: Grant Grundler <iod00d@hp.com>

John,
Sorry - I didn't realize the tests for DMA_NONE I pointed
out were now redundant. Can you respin this patch removing
the redundant checks for DMA_NONE as well?

thanks,
grant

> ---
>
> 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