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Re: [PATCH] vhost-vdpa: remove useless variable
From: |
Philippe Mathieu-Daudé |
Subject: |
Re: [PATCH] vhost-vdpa: remove useless variable |
Date: |
Sun, 20 Sep 2020 17:59:40 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 |
Cc'ing qemu-trivial@
On 9/20/20 5:20 PM, Laurent Vivier wrote:
> 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: Philippe Mathieu-Daudé <philmd@redhat.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);
>