Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
  drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 19 +------------------
  1 file changed, 1 insertion(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index b9275ba7c5a5..2970e534e2bb 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c

@@ -460,23 +460,6 @@ struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj)
  	return sgt;
  }
  
-static unsigned long rockchip_sg_get_contiguous_size(struct sg_table *sgt,
-						     int count)
-{
-	struct scatterlist *s;
-	dma_addr_t expected = sg_dma_address(sgt->sgl);
-	unsigned int i;
-	unsigned long size = 0;
-
-	for_each_sg(sgt->sgl, s, count, i) {
-		if (sg_dma_address(s) != expected)
-			break;
-		expected = sg_dma_address(s) + sg_dma_len(s);
-		size += sg_dma_len(s);
-	}
-	return size;
-}
-
  static int
  rockchip_gem_iommu_map_sg(struct drm_device *drm,
  			  struct dma_buf_attachment *attach,

@@ -498,7 +481,7 @@ rockchip_gem_dma_map_sg(struct drm_device *drm,
  	if (!count)
  		return -EINVAL;
  
-	if (rockchip_sg_get_contiguous_size(sg, count) < attach->dmabuf->size) {
+	if (drm_prime_get_contiguous_size(sg) < attach->dmabuf->size) {
  		DRM_ERROR("failed to map sg_table to contiguous linear address.\n");
  		dma_unmap_sg(drm->dev, sg->sgl, sg->nents,
  			     DMA_BIDIRECTIONAL);