On Thu, Nov 28, 2019 at 04:37:35PM +0100, Thierry Reding wrote:
From: Thierry Reding treding@nvidia.com
It's not known at import time whether or not all users of a DMA-BUF will be able to deal with non-contiguous memory. Each user needs to verify at map-time whether it can access the buffer.
Signed-off-by: Thierry Reding treding@nvidia.com
I'm not seeing any other check for nents ... does this mean that there's not actually any block that requires contig mem? -Daniel
drivers/gpu/drm/tegra/gem.c | 7 ------- 1 file changed, 7 deletions(-)
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 6dfad56eee2b..bc15b430156d 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -440,13 +440,6 @@ static struct tegra_bo *tegra_bo_import(struct drm_device *drm, err = tegra_bo_iommu_map(tegra, bo); if (err < 0) goto detach;
} else {
if (bo->sgt->nents > 1) {err = -EINVAL;goto detach;}bo->iova = sg_dma_address(bo->sgt->sgl);}
bo->gem.import_attach = attach;
-- 2.23.0
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