From: Chia-I Wu olvaffe@gmail.com
[ Upstream commit 85faca8ca0f659263b5fb2385e4c231cc075bd84 ]
Without this, the drm core advertises LINEAR modifier which is incorrect.
Also userspace virgl does not support modifiers. For example, it causes chrome on ozone/drm to fail with "Failed to create scanout buffer".
Fixes: 2af104290da5 ("drm: introduce fb_modifiers_not_supported flag in mode_config") Suggested-by: Shao-Chuan Lee shaochuan@chromium.org Signed-off-by: Chia-I Wu olvaffe@gmail.com Link: http://patchwork.freedesktop.org/patch/msgid/20220831190601.1295129-1-olvaff... Signed-off-by: Gerd Hoffmann kraxel@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/virtio/virtgpu_display.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c index 5c7f198c0712..9ea7611a9e0f 100644 --- a/drivers/gpu/drm/virtio/virtgpu_display.c +++ b/drivers/gpu/drm/virtio/virtgpu_display.c @@ -349,6 +349,8 @@ int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev) vgdev->ddev->mode_config.max_width = XRES_MAX; vgdev->ddev->mode_config.max_height = YRES_MAX;
+ vgdev->ddev->mode_config.fb_modifiers_not_supported = true; + for (i = 0 ; i < vgdev->num_scanouts; ++i) vgdev_output_init(vgdev, i);