linux-kernel - Re: [PATCH] igb: correct hardware type (i210/i211) check in igb_loopback

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Message-ID: <1343769121.2230.28.camel@jtkirshe-mobl>
Date:	Tue, 31 Jul 2012 14:12:01 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	"Wyborny, Carolyn" <carolyn.wyborny@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	"Pieper, Jeffrey E" <jeffrey.e.pieper@...el.com>,
	Rick Jones <rick.jones2@...com>,
	"Ronciak, John" <john.ronciak@...el.com>,
	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
	"Allan, Bruce W" <bruce.w.allan@...el.com>,
	"Skidmore, Donald C" <donald.c.skidmore@...el.com>,
	"Rose, Gregory V" <gregory.v.rose@...el.com>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"Duyck, Alexander H" <alexander.h.duyck@...el.com>
Subject: Re: [PATCH] igb: correct hardware type (i210/i211) check in
 igb_loopback_test()

On Tue, 2012-07-31 at 22:23 +0200, Jesper Juhl wrote:
> On Wed, 25 Jul 2012, Wyborny, Carolyn wrote:
> 
> > 
> > > -----Original Message-----
> > > From: Jesper Juhl [mailto:jj@...osbits.net] 
> > > Sent: Wednesday, July 25, 2012 12:06 PM
> > > To: linux-kernel@...r.kernel.org
> > > Cc: netdev@...r.kernel.org; e1000-devel@...ts.sourceforge.net;
> Wyborny, Carolyn; Pieper, Jeffrey E; Kirsher, Jeffrey T; Rick Jones;
> Ronciak, John; Brandeburg, Jesse; Allan, Bruce W; Skidmore, Donald C;
> Rose, Gregory V; Waskiewicz Jr, Peter P; Duyck, Alexander H; David S.
> Miller
> > > Subject: [PATCH] igb: correct hardware type (i210/i211) check in
> igb_loopback_test()
> > > 
> > > In the original code
> > > ...
> > >     if ((adapter->hw.mac.type == e1000_i210)
> > >             || (adapter->hw.mac.type == e1000_i210)) { ...
> > > the second check of 'adapter->hw.mac.type' is pointless since it
> tests for the exact same value as the first.
> > > 
> > > After reading through a few other parts of the driver I believe
> that the second check was actually intended to check for 'e1000_i211'
> > > rather than 'e1000_i210', but I admit that I'm not certain so
> someone with more knowledge about this driver should ACK the patch
> before it gets merged.
> > > 
> > > Unfortunately I have no hardware to actually test this on, so it
> is compile tested only.
> > > 
> > > Signed-off-by: Jesper Juhl <jj@...osbits.net>
> > > ---
> > >  drivers/net/ethernet/intel/igb/igb_ethtool.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c
> b/drivers/net/ethernet/intel/igb/igb_ethtool.c
> > > index a19c84c..ad489b7 100644
> > > --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
> > > +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
> > > @@ -1783,7 +1783,7 @@ static int igb_loopback_test(struct
> igb_adapter *adapter, u64 *data)
> > >             goto out;
> > >     }
> > >     if ((adapter->hw.mac.type == e1000_i210)
> > > -           || (adapter->hw.mac.type == e1000_i210)) {
> > > +           || (adapter->hw.mac.type == e1000_i211)) {
> > >             dev_err(&adapter->pdev->dev,
> > >                     "Loopback test not supported "
> > >                     "on this part at this time.\n");
> > > --
> > > 1.7.11.3
> > > 
> > 
> > ACK.
> > 
> > Good catch.  Thanks Jesper!
> > 
> > Carolyn
> > 
> > Carolyn Wyborny
> > Linux Development
> > LAN Access Division
> > Intel Corporation
> > 
> Thank you for the ack Carolyn.
> 
> David: will you take this in the networking tree? 

I have a few igb patches already, so I will send a pull request for Dave
with this patch added to the igb patches I already have.  Ok?

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