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

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Message-ID: <61CC2BC414934749BD9F5BF3D5D940449871E142@ORSMSX112.amr.corp.intel.com>
Date:   Tue, 16 Jun 2020 21:20:07 +0000
From:   "Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
To:     Eric Dumazet <eric.dumazet@...il.com>,
        Greg Thelen <gthelen@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "Lifshits, Vitaly" <vitaly.lifshits@...el.com>
CC:     "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] e1000e: add ifdef to avoid dead code

> -----Original Message-----
> From: Eric Dumazet <eric.dumazet@...il.com>
> 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>
[Kirsher, Jeffrey T] 

This patch is not necessary, after Arnd's patch.  Here is his patch:
http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20200527134716.948148-1-arnd@arndb.de/
 and I will be pushing it to Dave's net tree later tonight.