Re: [PATCH net-next] ethtool: remove set but not used variable 'lsettings'

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On Fri, Jan 03, 2020 at 03:48:56AM +0000, YueHaibing wrote:
> Fixes gcc '-Wunused-but-set-variable' warning:
> 
> net/ethtool/linkmodes.c: In function 'ethnl_set_linkmodes':
> net/ethtool/linkmodes.c:326:32: warning:
>  variable 'lsettings' set but not used [-Wunused-but-set-variable]
>   struct ethtool_link_settings *lsettings;
>                                 ^
> It is never used, so remove it.
> 
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
> ---
>  net/ethtool/linkmodes.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/net/ethtool/linkmodes.c b/net/ethtool/linkmodes.c
> index 0b99f494ad3b..96f20be64553 100644
> --- a/net/ethtool/linkmodes.c
> +++ b/net/ethtool/linkmodes.c
> @@ -323,7 +323,6 @@ int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info)
>  {
>  	struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1];
>  	struct ethtool_link_ksettings ksettings = {};
> -	struct ethtool_link_settings *lsettings;
>  	struct ethnl_req_info req_info = {};
>  	struct net_device *dev;
>  	bool mod = false;
> @@ -354,7 +353,6 @@ int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info)
>  			GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
>  		goto out_ops;
>  	}
> -	lsettings = &ksettings.base;
>  
>  	ret = ethnl_update_linkmodes(info, tb, &ksettings, &mod);
>  	if (ret < 0)

Reviewed-by: Michal Kubecek <mkubecek@xxxxxxx>

Thank you. I wonder why my compiler does not complain.

Michal



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