* [PATCH] net: netfilter: remove unused variable
@ 2017-03-29 13:38 Arushi Singhal
2017-03-29 14:16 ` [Outreachy kernel] " Julia Lawall
0 siblings, 1 reply; 2+ messages in thread
From: Arushi Singhal @ 2017-03-29 13:38 UTC (permalink / raw)
To: outreachy-kernel
Cc: Wensong Zhang, Simon Horman, Julian Anastasov, Pablo Neira Ayuso,
Jozsef Kadlecsik, David S. Miller, netdev, lvs-devel,
netfilter-devel, coreteam, linux-kernel
This patch uses the following coccinelle script to remove
a variable that was simply used to store the return
value of a function call before returning it:
@@
identifier len,f;
@@
-int len;
... when != len
when strict
-len =
+return
f(...);
-return len;
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
---
net/netfilter/ipvs/ip_vs_ftp.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_ftp.c b/net/netfilter/ipvs/ip_vs_ftp.c
index d30c327bb578..9e1e682610ef 100644
--- a/net/netfilter/ipvs/ip_vs_ftp.c
+++ b/net/netfilter/ipvs/ip_vs_ftp.c
@@ -482,11 +482,9 @@ static struct pernet_operations ip_vs_ftp_ops = {
static int __init ip_vs_ftp_init(void)
{
- int rv;
- rv = register_pernet_subsys(&ip_vs_ftp_ops);
/* rcu_barrier() is called by netns on error */
- return rv;
+ return register_pernet_subsys(&ip_vs_ftp_ops);
}
/*
--
2.11.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [Outreachy kernel] [PATCH] net: netfilter: remove unused variable
2017-03-29 13:38 [PATCH] net: netfilter: remove unused variable Arushi Singhal
@ 2017-03-29 14:16 ` Julia Lawall
0 siblings, 0 replies; 2+ messages in thread
From: Julia Lawall @ 2017-03-29 14:16 UTC (permalink / raw)
To: Arushi Singhal
Cc: outreachy-kernel, Wensong Zhang, Simon Horman, Julian Anastasov,
Pablo Neira Ayuso, Jozsef Kadlecsik, David S. Miller, netdev,
lvs-devel, netfilter-devel, coreteam, linux-kernel
On Wed, 29 Mar 2017, Arushi Singhal wrote:
> This patch uses the following coccinelle script to remove
> a variable that was simply used to store the return
> value of a function call before returning it:
>
> @@
> identifier len,f;
> @@
>
> -int len;
> ... when != len
> when strict
> -len =
> +return
> f(...);
> -return len;
>
> Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
> ---
> net/netfilter/ipvs/ip_vs_ftp.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/net/netfilter/ipvs/ip_vs_ftp.c b/net/netfilter/ipvs/ip_vs_ftp.c
> index d30c327bb578..9e1e682610ef 100644
> --- a/net/netfilter/ipvs/ip_vs_ftp.c
> +++ b/net/netfilter/ipvs/ip_vs_ftp.c
> @@ -482,11 +482,9 @@ static struct pernet_operations ip_vs_ftp_ops = {
>
> static int __init ip_vs_ftp_init(void)
> {
> - int rv;
>
> - rv = register_pernet_subsys(&ip_vs_ftp_ops);
> /* rcu_barrier() is called by netns on error */
> - return rv;
> + return register_pernet_subsys(&ip_vs_ftp_ops);
It looks like you end up with an unnecessary blank line at the beginning
of the function.
julia
> }
>
> /*
> --
> 2.11.0
>
> --
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2017-03-29 14:16 ` [Outreachy kernel] " Julia Lawall
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