swiotlb: replace dma_length with sg_dma_len() macro

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 <eunb.song@samsung.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index d23762e6652c..4e8686c7e5a4 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