From: Christopher James Halse Rogers <christopher.halse.rog...@canonical.com>
Any use of the framebuffer will migrate it to VRAM, which is not sensible for
an imported dma-buf.
Signed-off-by: Christopher James Halse Rogers
<christopher.halse.rog...@canonical.com>
CC: nouv...@lists.freedesktop.org
---
drivers/gpu/drm/nouveau/nouveau_display.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c
b/drivers/gpu/drm/nouveau/nouveau_display.c
index 72fdba1a1c5d..e8e6bc7b6d51 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -286,6 +286,10 @@ nouveau_user_framebuffer_create(struct drm_device *dev,
return ERR_PTR(-ENOENT);
nvbo = nouveau_gem_object(gem);
+ /* Handle is an imported dma-buf, so cannot be migrated to VRAM */
+ if (gem->import_attach)
+ return ERR_PTR(-EINVAL);
+
ret = nouveau_framebuffer_new(dev, mode_cmd, nvbo, &fb);
if (ret == 0)
return &fb->base;
--
2.11.0
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