shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-09 20:32:04 +09:00
Code Issues Packages Projects Releases Wiki Activity

drm/radeon: Fail fb creation from imported dma-bufs.

Browse Source 
[ Upstream commit a294043b2f ]

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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christopher James Halse Rogers
2017-03-29 15:00:54 +11:00
committed by Greg Kroah-Hartman
parent b8c231ebce
commit 7d6140b4de
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/radeon/radeon_display.c
View File

@@ -1352,6 +1352,12 @@ radeon_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);
}
radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
if (radeon_fb == NULL) {
drm_gem_object_unreference_unlocked(obj);