...
> +static struct
> +drm_plane_state *virtio_gpu_plane_duplicate_state(struct drm_plane *plane)
> +{
> + struct virtio_gpu_plane_state *new;
> +
> + if (WARN_ON(!plane->state))
> + return NULL;
When plane->state can be NULL?
> + new = kzalloc(sizeof(*new), GFP_KERNEL);
> + if (!new)
> + return NULL;
> +
> + __drm_atomic_helper_plane_duplicate_state(plane, &new->base);
> +
> + return &new->base;
> +}
> +
> +static void virtio_gpu_plane_destroy_state(struct drm_plane *plane,
> + struct drm_plane_state *state)
> +{
> + __drm_atomic_helper_plane_destroy_state(state);
> + kfree(to_virtio_gpu_plane_state(state));
> +}
> +
> static const struct drm_plane_funcs virtio_gpu_plane_funcs = {
> .update_plane = drm_atomic_helper_update_plane,
> .disable_plane = drm_atomic_helper_disable_plane,
> .reset = drm_atomic_helper_plane_reset,
> - .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
> - .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
> + .atomic_duplicate_state = virtio_gpu_plane_duplicate_state,
> + .atomic_destroy_state = virtio_gpu_plane_destroy_state,
Similar to the other email, please see how container_of() works. There
is no need change .atomic_destroy_state
...
> @@ -237,41 +262,29 @@ static int virtio_gpu_plane_prepare_fb(struct drm_plane
> *plane,
> struct drm_device *dev = plane->dev;
> struct virtio_gpu_device *vgdev = dev->dev_private;
> struct virtio_gpu_framebuffer *vgfb;
> + struct virtio_gpu_plane_state *vgplane_st;
> struct virtio_gpu_object *bo;
>
> if (!new_state->fb)
> return 0;
>
> vgfb = to_virtio_gpu_framebuffer(new_state->fb);
> + vgplane_st = to_virtio_gpu_plane_state(new_state);
> bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
> if (!bo || (plane->type == DRM_PLANE_TYPE_PRIMARY && !bo->guest_blob))
> return 0;
>
> - if (bo->dumb && (plane->state->fb != new_state->fb)) {
> - vgfb->fence = virtio_gpu_fence_alloc(vgdev,
> vgdev->fence_drv.context,
> + if (bo->dumb) {
Why "&& (plane->state->fb != new_state->fb)" disappeared?
> + vgplane_st->fence = virtio_gpu_fence_alloc(vgdev,
> + vgdev->fence_drv.context,
> 0);
> - if (!vgfb->fence)
> + if (!vgplane_st->fence)
> return -ENOMEM;
> }
>
> return 0;
> }
>
> -static void virtio_gpu_plane_cleanup_fb(struct drm_plane *plane,
> - struct drm_plane_state *state)
> -{
> - struct virtio_gpu_framebuffer *vgfb;
> -
> - if (!state->fb)
> - return;
> -
> - vgfb = to_virtio_gpu_framebuffer(state->fb);
> - if (vgfb->fence) {
> - dma_fence_put(&vgfb->fence->f);
> - vgfb->fence = NULL;
> - }
> -}
How come that virtio_gpu_plane_cleanup_fb() isn't needed anymore? You
created fence in prepare_fb(), you must release it in cleanup_fb() if
fence still presents.
--
Best regards,
Dmitry
