drm/virtio: add real fence context and seqno

virtio fences were created with no fence context, which would make then
clash with an allocated fence context.

Signed-off-by: Gustavo Padovan <[e-mail]>
Message-id: [e-mail]
Signed-off-by: Gerd Hoffmann <[e-mail]>

drivers/gpu/drm/virtio/virtgpu_drv.h

···
 struct virtio_gpu_fence_driver {
 	atomic64_t       last_seq;
 	uint64_t         sync_seq;
+	uint64_t         context;
 	struct list_head fences;
 	spinlock_t       lock;
 };

drivers/gpu/drm/virtio/virtgpu_fence.c

···
 	(*fence)->drv = drv;
 	(*fence)->seq = ++drv->sync_seq;
 	fence_init(&(*fence)->f, &virtio_fence_ops, &drv->lock,
-		   0, (*fence)->seq);
+		   drv->context, (*fence)->seq);
 	fence_get(&(*fence)->f);
 	list_add_tail(&(*fence)->node, &drv->fences);
 	spin_unlock_irqrestore(&drv->lock, irq_flags);

drivers/gpu/drm/virtio/virtgpu_kms.c

···
 	virtio_gpu_init_vq(&vgdev->ctrlq, virtio_gpu_dequeue_ctrl_func);
 	virtio_gpu_init_vq(&vgdev->cursorq, virtio_gpu_dequeue_cursor_func);
 
+	vgdev->fence_drv.context = fence_context_alloc(1);
 	spin_lock_init(&vgdev->fence_drv.lock);
 	INIT_LIST_HEAD(&vgdev->fence_drv.fences);
 	INIT_LIST_HEAD(&vgdev->cap_cache);