# \[PATCH v2\] virtio\_net/vringh: add "else { }" according coding style

- Subsystems: VIRTIO HOST (VHOST), VIRTIO NET DRIVER, NETWORKING DRIVERS, THE REST
- Maintainers: "Michael S. Tsirkin", Jason Wang, Eugenio Pérez, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
- List: virtualization
- 2 messages, 2 authors
- Page: https://ratatoskr.run/virtualization/2021/06/1424321/t

## \[PATCH v2\] virtio\_net/vringh: add "else { }" according coding style

- From: Cai Huoqing \<hidden\>
- Date: 2021-06-24 01:33:35 
- Message: https://ratatoskr.run/virtualization/2021/06/1424321.md

```text
coding-style.rst shows that:
        if (condition) {
                do_this();
                do_that();
        } else {
                otherwise();
        }

Signed-off-by: Cai Huoqing <redacted>
---
 drivers/net/virtio_net.c | 3 ++-
 drivers/vhost/vringh.c   | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 21ff7b9e49c2..7cd062cb468e 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -314,8 +314,9 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask)
                rq->pages = (struct page *)p->private;
                /* clear private here, it is used to chain pages */
                p->private = 0;
-       } else
+       } else {
                p = alloc_page(gfp_mask);
+       }
        return p;
 }

diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index 4af8fa259d65..79542cad1072 100644
--- a/drivers/vhost/vringh.c
+++ b/drivers/vhost/vringh.c
@@ -454,8 +454,9 @@ static inline int __vringh_complete(struct vringh *vrh,
                if (!err)
                        err = putused(vrh, &used_ring->ring[0], used + part,
                                      num_used - part);
-       } else
+       } else {
                err = putused(vrh, &used_ring->ring[off], used, num_used);
+       }

        if (err) {
                vringh_bad("Failed to write %u used entries %u at %p",
--
2.17.1

_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
```

## Re: \[PATCH v2\] virtio\_net/vringh: add "else { }" according coding style

- From: Jason Wang \<hidden\>
- Date: 2021-06-24 04:03:38 
- Message: https://ratatoskr.run/virtualization/2021/06/1424417.md

```text

在 2021/6/24 上午9:17, Cai Huoqing 写道:
> coding-style.rst shows that:
>          if (condition) {
>                  do_this();
>                  do_that();
>          } else {
>                  otherwise();
>          }


So git grep told me there're at least 28 similar "issues" in drivers/virito. And there will be a lot in the other part of the kernel

I think it's not worth to bother. We can start to work on something that is really interesting.

E.g we had the plan to convert to use iov iterator instead of using a vringh specific iov "iterator" implementation. Do you want to do that?

Thanks


>
> Signed-off-by: Cai Huoqing <redacted>
> ---
>   drivers/net/virtio_net.c | 3 ++-
>   drivers/vhost/vringh.c   | 3 ++-
>   2 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 21ff7b9e49c2..7cd062cb468e 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -314,8 +314,9 @@ static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask)
>                  rq->pages = (struct page *)p->private;
>                  /* clear private here, it is used to chain pages */
>                  p->private = 0;
> -       } else
> +       } else {
>                  p = alloc_page(gfp_mask);
> +       }
>          return p;
>   }
>
> diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
> index 4af8fa259d65..79542cad1072 100644
> --- a/drivers/vhost/vringh.c
> +++ b/drivers/vhost/vringh.c
> @@ -454,8 +454,9 @@ static inline int __vringh_complete(struct vringh *vrh,
>                  if (!err)
>                          err = putused(vrh, &used_ring->ring[0], used + part,
>                                        num_used - part);
> -       } else
> +       } else {
>                  err = putused(vrh, &used_ring->ring[off], used, num_used);
> +       }
>
>          if (err) {
>                  vringh_bad("Failed to write %u used entries %u at %p",
> --
> 2.17.1
>

_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
```