Subject: [PATCH v4 01/10] swiotlb: replace dma_length with sg_dma_len() macro

From: [email-masked] (Konrad Rzeszutek Wilk)
Date: Thu, 15 Aug 2013 15:45:32 -0400

On Thu, Aug 15, 2013 at 12:10:45PM +0100, Stefano Stabellini wrote:
> From: EUNBONG SONG <[email-masked]>
> 
> This patch replace dma_length in "lib/swiotlb.c" to sg_dma_len() macro,
> because the build error can occur if CONFIG_NEED_SG_DMA_LENGTH is not
> set, and CONFIG_SWIOTLB is set.
> 
> Singed-off-by: EunBong Song <[email-masked]>
> Signed-off-by: Stefano Stabellini <[email-masked]>

I already took that patch, so you can drop it here.
> ---
>  lib/swiotlb.c |    8 ++++----
>  1 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/lib/swiotlb.c b/lib/swiotlb.c
> index d23762e..4e8686c 100644
> --- a/lib/swiotlb.c
> +++ b/lib/swiotlb.c
> @@ -870,13 +870,13 @@ swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
>  				swiotlb_full(hwdev, sg->length, dir, 0);
>  				swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,
>  						       attrs);
> -				sgl[0].dma_length = 0;
> +				sg_dma_len(sgl) = 0;
>  				return 0;
>  			}
>  			sg->dma_address = phys_to_dma(hwdev, map);
>  		} else
>  			sg->dma_address = dev_addr;
> -		sg->dma_length = sg->length;
> +		sg_dma_len(sg) = sg->length;
>  	}
>  	return nelems;
>  }
> @@ -904,7 +904,7 @@ swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
>  	BUG_ON(dir == DMA_NONE);
>  
>  	for_each_sg(sgl, sg, nelems, i)
> -		unmap_single(hwdev, sg->dma_address, sg->dma_length, dir);
> +		unmap_single(hwdev, sg->dma_address, sg_dma_len(sg), dir);
>  
>  }
>  EXPORT_SYMBOL(swiotlb_unmap_sg_attrs);
> @@ -934,7 +934,7 @@ swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sgl,
>  
>  	for_each_sg(sgl, sg, nelems, i)
>  		swiotlb_sync_single(hwdev, sg->dma_address,
> -				    sg->dma_length, dir, target);
> +				    sg_dma_len(sg), dir, target);
>  }
>  
>  void
> -- 
> 1.7.2.5
>