netdev - Re: [PATCH net-next 03/13] net: ethernet: aquantia: Removed unnecessary comparsion "old_mtu == new

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Date:   Wed, 15 Feb 2017 21:56:30 +0100
From:   Lino Sanfilippo <LinoSanfilippo@....de>
To:     Pavel Belous <Pavel.Belous@...antia.com>,
        "David S . Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org,
        Simon Edelhaus <Simon.Edelhaus@...antia.com>,
        Alexey Andriyanov <Alexey.Andriyanov@...antia.com>
Subject: Re: [PATCH net-next 03/13] net: ethernet: aquantia: Removed
 unnecessary comparsion "old_mtu == new_mtu".

On 15.02.2017 21:01, Pavel Belous wrote:
> From: Pavel Belous <pavel.belous@...antia.com>
>
> This check is not needed. Function aq_ndev_change_mtu wont be called
> if mtu has not changed.
>
> Signed-off-by: Pavel Belous <pavel.belous@...antia.com>
> ---
>  drivers/net/ethernet/aquantia/atlantic/aq_main.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_main.c b/drivers/net/ethernet/aquantia/atlantic/aq_main.c
> index c17c70a..e5539c8 100644
> --- a/drivers/net/ethernet/aquantia/atlantic/aq_main.c
> +++ b/drivers/net/ethernet/aquantia/atlantic/aq_main.c
> @@ -102,17 +102,15 @@ static int aq_ndev_change_mtu(struct net_device *ndev, int new_mtu)
>  	struct aq_nic_s *aq_nic = netdev_priv(ndev);
>  	int err = 0;
>
> -	if (new_mtu == ndev->mtu) {
> -		err = 0;
> -		goto err_exit;
> -	}
>  	if (new_mtu < 68) {
>  		err = -EINVAL;
>  		goto err_exit;
>  	}
> +
>  	err = aq_nic_set_mtu(aq_nic, new_mtu + ETH_HLEN);
>  	if (err < 0)
>  		goto err_exit;
> +
>  	ndev->mtu = new_mtu;
>
>  	if (netif_running(ndev)) {
>

Reviewed-by: Lino Sanfilippo <LinoSanfilippo@....de>

Regards,
Lino