linux-kernel - Re: [PATCH net-next] net: fec: ptp: remove unused variable 'ns' in fec_time

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Date:   Mon, 14 Sep 2020 13:43:10 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     zhangchangzhong@...wei.com
Cc:     fugang.duan@....com, kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net: fec: ptp: remove unused variable 'ns' in
 fec_time_keep()

From: Zhang Changzhong <zhangchangzhong@...wei.com>
Date: Mon, 14 Sep 2020 21:14:24 +0800

> Fixes the following W=1 kernel build warning(s):
> 
> drivers/net/ethernet/freescale/fec_ptp.c:523:6: warning:
>  variable 'ns' set but not used [-Wunused-but-set-variable]
>   523 |  u64 ns;
>       |      ^~
> 
> After commit 6605b730c061 ("FEC: Add time stamping code and a PTP
> hardware clock"), variable 'ns' is never used in fec_time_keep(),
> so removing it to avoid build warning.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>

Applied.