From: Thierry Reding Date: Fri, 8 Jun 2018 12:59:13 +0000 (+0200) Subject: drm/tegra: gem: Always map SG tables for DMA-BUFs X-Git-Tag: v5.5-rc1~128^2~20^2~51 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=8b5a3c17a2778fba817c38beb545bc48228b8da5;p=linux.git drm/tegra: gem: Always map SG tables for DMA-BUFs When an importer wants to map a DMA-BUF, make sure to always actually map it, irrespective of whether the buffer is contiguous or not. Signed-off-by: Thierry Reding --- diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 3345cce14662..00701cadaceb 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -516,15 +516,15 @@ tegra_gem_prime_map_dma_buf(struct dma_buf_attachment *attach, for_each_sg(sgt->sgl, sg, bo->num_pages, i) sg_set_page(sg, bo->pages[i], PAGE_SIZE, 0); - - if (dma_map_sg(attach->dev, sgt->sgl, sgt->nents, dir) == 0) - goto free; } else { if (dma_get_sgtable(attach->dev, sgt, bo->vaddr, bo->iova, gem->size) < 0) goto free; } + if (dma_map_sg(attach->dev, sgt->sgl, sgt->nents, dir) == 0) + goto free; + return sgt; free: