linux-kernel - Re: [PATCH] net: sctp: drop unneeded likely() call around IS

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Message-ID: <20190729190352.GD4064@localhost.localdomain>
Date:   Mon, 29 Jul 2019 16:03:52 -0300
From:   Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:     "Enrico Weigelt, metux IT consult" <info@...ux.net>
Cc:     linux-kernel@...r.kernel.org, vyasevich@...il.com,
        nhorman@...driver.com, davem@...emloft.net,
        linux-sctp@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] net: sctp: drop unneeded likely() call around IS_ERR()

On Mon, Jul 29, 2019 at 08:55:21PM +0200, Enrico Weigelt, metux IT consult wrote:
> From: Enrico Weigelt <info@...ux.net>
> 
> IS_ERR() already calls unlikely(), so this extra unlikely() call
> around IS_ERR() is not needed.
> 
> Signed-off-by: Enrico Weigelt <info@...ux.net>

Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>

> ---
>  net/sctp/socket.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/net/sctp/socket.c b/net/sctp/socket.c
> index aa80cda..9d1f83b 100644
> --- a/net/sctp/socket.c
> +++ b/net/sctp/socket.c
> @@ -985,7 +985,7 @@ static int sctp_setsockopt_bindx(struct sock *sk,
>  		return -EINVAL;
>  
>  	kaddrs = memdup_user(addrs, addrs_size);
> -	if (unlikely(IS_ERR(kaddrs)))
> +	if (IS_ERR(kaddrs))
>  		return PTR_ERR(kaddrs);
>  
>  	/* Walk through the addrs buffer and count the number of addresses. */
> @@ -1315,7 +1315,7 @@ static int __sctp_setsockopt_connectx(struct sock *sk,
>  		return -EINVAL;
>  
>  	kaddrs = memdup_user(addrs, addrs_size);
> -	if (unlikely(IS_ERR(kaddrs)))
> +	if (IS_ERR(kaddrs))
>  		return PTR_ERR(kaddrs);
>  
>  	/* Allow security module to validate connectx addresses. */
> -- 
> 1.9.1
>