Re: [PATCH] vhost-vdpa: remove useless variable

[Li Qiang]

Laurent Vivier <lvivier@redhat.com> 于2020年9月20日周日 下午11:21写道：
>
> in vhost_vdpa_listener_region_del(), try_unmap is always true and so,
> vhost_vdpa_dma_unmap() is always called. We can remove the variable
>
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>

Reviewed-by: Li Qiang <liq3ea@gmail.com>

> ---
>  hw/virtio/vhost-vdpa.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
> index 4580f3efd8a2..c6cae6a6cabf 100644
> --- a/hw/virtio/vhost-vdpa.c
> +++ b/hw/virtio/vhost-vdpa.c
> @@ -153,7 +153,6 @@ static void vhost_vdpa_listener_region_del(MemoryListener 
> *listener,
>      hwaddr iova;
>      Int128 llend, llsize;
>      int ret;
> -    bool try_unmap = true;
>
>      if (vhost_vdpa_listener_skipped_section(section)) {
>          return;
> @@ -176,11 +175,9 @@ static void 
> vhost_vdpa_listener_region_del(MemoryListener *listener,
>
>      llsize = int128_sub(llend, int128_make64(iova));
>
> -    if (try_unmap) {
> -        ret = vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize));
> -        if (ret) {
> -            error_report("vhost_vdpa dma unmap error!");
> -        }
> +    ret = vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize));
> +    if (ret) {
> +        error_report("vhost_vdpa dma unmap error!");
>      }
>
>      memory_region_unref(section->mr);
> --
> 2.26.2
>
>