netdev - [PATCH net v2 3/3] qede: Fix possible misconfiguration of advertised autoneg value.

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Date:   Thu, 4 May 2017 08:15:05 -0700
From:   Sudarsana Reddy Kalluru <sudarsana.kalluru@...ium.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <Yuval.Mintz@...ium.com>
Subject: [PATCH net v2 3/3] qede: Fix possible misconfiguration of advertised autoneg value.

Fail the configuration of advertised speed-autoneg value if the config
update is not supported.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@...ium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@...ium.com>
---
 drivers/net/ethernet/qlogic/qede/qede_ethtool.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index b22753c..172b292 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -493,6 +493,11 @@ static int qede_set_link_ksettings(struct net_device *dev,
 	params.override_flags |= QED_LINK_OVERRIDE_SPEED_ADV_SPEEDS;
 	params.override_flags |= QED_LINK_OVERRIDE_SPEED_AUTONEG;
 	if (base->autoneg == AUTONEG_ENABLE) {
+		if (!(current_link.supported_caps & QED_LM_Autoneg_BIT)) {
+			DP_INFO(edev, "Auto negotiation is not supported\n");
+			return -EOPNOTSUPP;
+		}
+
 		params.autoneg = true;
 		params.forced_speed = 0;
 		QEDE_ETHTOOL_TO_DRV_CAPS(params.adv_speeds, cmd, advertising)
-- 
1.8.3.1