From: Thierry Reding <thierry.reding@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH 3/9] drm/tegra: gem: Remove premature import restrictions
Date: Thu, 28 Nov 2019 16:37:35 +0100 [thread overview]
Message-ID: <20191128153741.2380419-4-thierry.reding@gmail.com> (raw)
In-Reply-To: <20191128153741.2380419-1-thierry.reding@gmail.com>
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>
---
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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next prev parent reply other threads:[~2019-11-28 15:37 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-28 15:37 [PATCH 0/9] drm/tegra: Miscellaneous fixes Thierry Reding
2019-11-28 15:37 ` [PATCH 1/9] drm/tegra: hub: Remove bogus connection mutex check Thierry Reding
2019-11-29 9:06 ` Daniel Vetter
2019-11-29 10:12 ` Thierry Reding
2019-11-29 19:03 ` Daniel Vetter
2019-12-02 15:08 ` Thierry Reding
2019-11-28 15:37 ` [PATCH 2/9] drm/tegra: gem: Properly pin imported buffers Thierry Reding
2019-11-29 9:10 ` Daniel Vetter
2019-11-29 10:15 ` Thierry Reding
2019-11-29 19:09 ` Daniel Vetter
2019-11-28 15:37 ` Thierry Reding [this message]
2019-11-29 9:12 ` [PATCH 3/9] drm/tegra: gem: Remove premature import restrictions Daniel Vetter
2019-11-29 10:33 ` Thierry Reding
2019-11-29 20:06 ` Daniel Vetter
2019-11-28 15:37 ` [PATCH 4/9] drm/tegra: Use proper IOVA address for cursor image Thierry Reding
2019-11-28 15:37 ` [PATCH 5/9] drm/tegra: sor: Implement system suspend/resume Thierry Reding
2019-11-28 15:37 ` [PATCH 6/9] drm/tegra: vic: Export module device table Thierry Reding
2019-11-28 15:37 ` [PATCH 7/9] drm/tegra: Silence expected errors on IOMMU attach Thierry Reding
2019-11-28 15:37 ` [PATCH 8/9] drm/tegra: dpaux: Add missing runtime PM references Thierry Reding
2019-11-29 9:23 ` Daniel Vetter
2019-11-29 10:44 ` Thierry Reding
2019-11-29 20:20 ` Daniel Vetter
2019-12-02 14:58 ` Thierry Reding
2019-12-03 9:27 ` Daniel Vetter
2019-11-28 15:37 ` [PATCH 9/9] drm/tegra: sor: Make the +5V HDMI supply optional Thierry Reding
2019-11-29 9:24 ` Daniel Vetter
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