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

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Message-ID: <9BBC4E0CF881AA4299206E2E1412B62630D64753@ORSMSX102.amr.corp.intel.com>
Date:	Wed, 25 Jul 2012 19:13:36 +0000
From:	"Wyborny, Carolyn" <carolyn.wyborny@...el.com>
To:	Jesper Juhl <jj@...osbits.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	"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>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...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>,
	"David S. Miller" <davem@...emloft.net>
Subject: RE: [PATCH] igb: correct hardware type (i210/i211) check in
 igb_loopback_test()



-----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


-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
Don't top-post http://www.catb.org/jargon/html/T/top-post.html
Plain text mails only, please.

ACK.

Good catch.  Thanks Jesper!

Carolyn

Carolyn Wyborny
Linux Development
LAN Access Division
Intel Corporation



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