netdev - Re: [PATCH net-next] net: ena: removed unused tx

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Message-ID: <pj41zlmt3wbq4k.fsf@u570694869fb251.ant.amazon.com>
Date:   Tue, 28 Mar 2023 23:02:11 +0300
From:   Shay Agroskin <shayagr@...zon.com>
To:     Simon Horman <horms@...nel.org>
CC:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        "Arthur Kiyanovski" <akiyano@...zon.com>,
        David Arinzon <darinzon@...zon.com>,
        "Noam Dagan" <ndagan@...zon.com>,
        Saeed Bishara <saeedb@...zon.com>, Tom Rix <trix@...hat.com>,
        <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] net: ena: removed unused tx_bytes variable


Simon Horman <horms@...nel.org> writes:

> clang 16.0.0 with W=1 reports:
>
> drivers/net/ethernet/amazon/ena/ena_netdev.c:1901:6: error: 
> variable 'tx_bytes' set but not used 
> [-Werror,-Wunused-but-set-variable]
>         u32 tx_bytes = 0;
>
> The variable is not used so remove it.
>
> Signed-off-by: Simon Horman <horms@...nel.org>
> ---
>  drivers/net/ethernet/amazon/ena/ena_netdev.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c 
> b/drivers/net/ethernet/amazon/ena/ena_netdev.c
> index e0588a82c8e5..e6a6efaeb87c 100644
> --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c
> +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c
> @@ -1898,7 +1898,6 @@ static int ena_clean_xdp_irq(struct 
> ena_ring *xdp_ring, u32 budget)
>  {
>  	u32 total_done = 0;
>  	u16 next_to_clean;
> -	u32 tx_bytes = 0;
>  	int tx_pkts = 0;
>  	u16 req_id;
>  	int rc;
> @@ -1936,7 +1935,6 @@ static int ena_clean_xdp_irq(struct 
> ena_ring *xdp_ring, u32 budget)
>  			  "tx_poll: q %d skb %p completed\n", 
>  xdp_ring->qid,
>  			  xdpf);
>  
> -		tx_bytes += xdpf->len;
>  		tx_pkts++;
>  		total_done += tx_info->tx_descs;

Thanks for submitting this change.

Acked-by: Shay Agroskin <shayagr@...zon.com>