diff options
| author | Christopher James Halse Rogers <christopher.halse.rogers@canonical.com> | 2017-03-29 15:02:11 +1100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-04-07 12:20:39 -0400 |
| commit | 1769152ac64b0b07583f696b621624df2ca4c840 (patch) | |
| tree | bd870174dc49b064758535e9efdc8424c68ce358 /drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | |
| parent | a294043b2fbd8de69d161457ed0c7a4026bbfa5a (diff) | |
drm/amdgpu: Fail fb creation from imported dma-bufs. (v2)
Any use of the framebuffer will migrate it to VRAM, which is not sensible for
an imported dma-buf.
v2: Use DRM_DEBUG_KMS to prevent userspace accidentally spamming dmesg.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
CC: amd-gfx@lists.freedesktop.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_display.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c index ce15721cadda..96926a221bd5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c @@ -614,6 +614,12 @@ amdgpu_user_framebuffer_create(struct drm_device *dev, return ERR_PTR(-ENOENT); } + /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */ + if (obj->import_attach) { + DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n"); + return ERR_PTR(-EINVAL); + } + amdgpu_fb = kzalloc(sizeof(*amdgpu_fb), GFP_KERNEL); if (amdgpu_fb == NULL) { drm_gem_object_unreference_unlocked(obj); |