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Date:	Mon, 04 Aug 2014 09:05:55 +0900
From:	YOSHIFUJI Hideaki <hideaki.yoshifuji@...aclelinux.com>
To:	Dmitry Popov <ixaphire@...tor.net>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	David Miller <davem@...emloft.net>
CC:	hideaki.yoshifuji@...aclelinux.com
Subject: Re: [PATCH] tcp: md5: remove unneeded check in tcp_v4_parse_md5_keys

Dmitry Popov wrote:
> tcpm_key is an array inside struct tcp_md5sig, there is no need to check it
> against NULL.
>
> Signed-off-by: Dmitry Popov <ixaphire@...tor.net>

Acked-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>

(IPv6 side is okay.)

> ---
>   net/ipv4/tcp_ipv4.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
> index 77cccda..8ea4eff 100644
> --- a/net/ipv4/tcp_ipv4.c
> +++ b/net/ipv4/tcp_ipv4.c
> @@ -1064,7 +1064,7 @@ static int tcp_v4_parse_md5_keys(struct sock *sk, char __user *optval,
>   	if (sin->sin_family != AF_INET)
>   		return -EINVAL;
>
> -	if (!cmd.tcpm_key || !cmd.tcpm_keylen)
> +	if (!cmd.tcpm_keylen)
>   		return tcp_md5_do_del(sk, (union tcp_md5_addr *)&sin->sin_addr.s_addr,
>   				      AF_INET);
>
> --
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--yoshfuji
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