netdev - [net-next-2.6 v2 03/15] e1000e: return appropriate errors for 'ethtool -r'

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Date:	Fri, 11 Feb 2011 09:20:50 -0800
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Bruce Allan <bruce.w.allan@...el.com>, netdev@...r.kernel.org,
	gospo@...hat.com, bphilips@...ell.com,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next-2.6 v2 03/15] e1000e: return appropriate errors for 'ethtool -r'

From: Bruce Allan <bruce.w.allan@...el.com>

...when invoked while interface is not up or when auto-negotiation is
disabled as done by other drivers.

Signed-off-by: Bruce Allan <bruce.w.allan@...el.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/e1000e/ethtool.c |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index 0c08599..65ef9b5 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -1963,8 +1963,15 @@ static int e1000_set_coalesce(struct net_device *netdev,
 static int e1000_nway_reset(struct net_device *netdev)
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
-	if (netif_running(netdev))
-		e1000e_reinit_locked(adapter);
+
+	if (!netif_running(netdev))
+		return -EAGAIN;
+
+	if (!adapter->hw.mac.autoneg)
+		return -EINVAL;
+
+	e1000e_reinit_locked(adapter);
+
 	return 0;
 }
 
-- 
1.7.4

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