[PATCH] drm/virtio: delete notify in virtio_gpu_object_create

[Gurchetan Singh]

For 3D buffers, virtio_gpu_gem_object_open notifies.
We can have the same behavior for dumb buffer.  We just
need to make sure the first open notifies the host for
dumb buffers.

v2: virtio_gpu_gem_object_open always notifies

Signed-off-by: Gurchetan Singh <gurchetansingh at chromium.org>
---
 drivers/gpu/drm/virtio/virtgpu_drv.h    |  1 +
 drivers/gpu/drm/virtio/virtgpu_gem.c    | 10 ++++++++--
 drivers/gpu/drm/virtio/virtgpu_object.c |  1 -
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 79ad176aca5a8..842200e01d785 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -71,6 +71,7 @@ struct virtio_gpu_object {
 	uint32_t hw_res_handle;
 	bool dumb;
 	bool created;
+	bool notified;
 };
 #define gem_to_virtio_gpu_obj(gobj) \
 	container_of((gobj), struct virtio_gpu_object, base.base)
diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c
index 90c0a8ea1708c..597ddb7391fb9 100644
--- a/drivers/gpu/drm/virtio/virtgpu_gem.c
+++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
@@ -111,10 +111,13 @@ int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
 {
 	struct virtio_gpu_device *vgdev = obj->dev->dev_private;
 	struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
+	struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(obj);
 	struct virtio_gpu_object_array *objs;
 
-	if (!vgdev->has_virgl_3d)
-		return 0;
+	if (!vgdev->has_virgl_3d && !bo->notified)
+		goto out_notify;
+	else if (!vgdev->has_virgl_3d)
+		goto out;
 
 	objs = virtio_gpu_array_alloc(1);
 	if (!objs)
@@ -123,7 +126,10 @@ int virtio_gpu_gem_object_open(struct drm_gem_object *obj,
 
 	virtio_gpu_cmd_context_attach_resource(vgdev, vfpriv->ctx_id,
 					       objs);
+out_notify:
+	bo->notified = true;
 	virtio_gpu_notify(vgdev);
+out:
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index d9039bb7c5e37..51a8da7d5ef3b 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -241,7 +241,6 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
 		return ret;
 	}
 
-	virtio_gpu_notify(vgdev);
 	*bo_ptr = bo;
 	return 0;
 
-- 
2.24.1