linux-kernel - Re: [PATCH] e1000e: add ifdef to avoid dead code

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Message-ID: <b88dc544-9f1b-75af-244e-9967ffeacf0e@gmail.com>
Date:   Tue, 16 Jun 2020 07:53:44 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Greg Thelen <gthelen@...gle.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Vitaly Lifshits <vitaly.lifshits@...el.com>
Cc:     intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] e1000e: add ifdef to avoid dead code



On 6/13/20 11:11 PM, Greg Thelen wrote:
> Commit e086ba2fccda ("e1000e: disable s0ix entry and exit flows for ME
> systems") added e1000e_check_me() but it's only called from
> CONFIG_PM_SLEEP protected code.  Thus builds without CONFIG_PM_SLEEP
> see:
>   drivers/net/ethernet/intel/e1000e/netdev.c:137:13: warning: 'e1000e_check_me' defined but not used [-Wunused-function]
> 
> Add CONFIG_PM_SLEEP ifdef guard to avoid dead code.
> 
> Fixes: e086ba2fccda ("e1000e: disable s0ix entry and exit flows for ME systems")
> Signed-off-by: Greg Thelen <gthelen@...gle.com>
> ---
>  drivers/net/ethernet/intel/e1000e/netdev.c | 2 ++
>  1 file changed, 2 insertions(+)

Reviewed-by: Eric Dumazet <edumazet@...gle.com>

Thanks Greg