From: Xie Yongji xieyongji@bytedance.com

[ Upstream commit 17f46f488a5d82c5568e6e786cd760bba1c2ee09 ]

The dev->dev_private might not be allocated if virtio_gpu_pci_quirk() or virtio_gpu_init() failed. In this case, we should avoid the cleanup in virtio_gpu_release().

Signed-off-by: Xie Yongji xieyongji@bytedance.com Link: http://patchwork.freedesktop.org/patch/msgid/20210517084913.403-1-xieyongji@... Signed-off-by: Gerd Hoffmann kraxel@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/virtio/virtgpu_kms.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c index ba7855da7c7f..d8b2027730d0 100644 --- a/drivers/gpu/drm/virtio/virtgpu_kms.c +++ b/drivers/gpu/drm/virtio/virtgpu_kms.c @@ -258,6 +258,9 @@ int virtio_gpu_driver_unload(struct drm_device *dev) flush_work(&vgdev->config_changed_work); vgdev->vdev->config->del_vqs(vgdev->vdev);

+ if (!vgdev) + return; + virtio_gpu_modeset_fini(vgdev); virtio_gpu_ttm_fini(vgdev); virtio_gpu_free_vbufs(vgdev);