linux-kernel - [PATCH net] net: stmmac: fix ethtool flow control not able to get/set

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Message-Id: <1558414542-28550-1-git-send-email-weifeng.voon@intel.com>
Date:   Tue, 21 May 2019 12:55:42 +0800
From:   Weifeng Voon <weifeng.voon@...el.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jose Abreu <joabreu@...opsys.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        Tan Tee Min <tee.min.tan@...el.com>,
        Weifeng Voon <weifeng.voon@...el.com>
Subject: [PATCH net] net: stmmac: fix ethtool flow control not able to get/set

From: "Tan, Tee Min" <tee.min.tan@...el.com>

Currently ethtool was not able to get/set the flow control due to a
missing "!". It will always return -EOPNOTSUPP even the device is
flow control supported.

This patch fixes the condition check for ethtool flow control get/set
function for ETHTOOL_LINK_MODE_Asym_Pause_BIT.

Fixes: 3c1bcc8614db (“net: ethernet: Convert phydev advertize and supported from u32 to link mode”)
Signed-off-by: Tan, Tee Min <tee.min.tan@...el.com>
Reviewed-by: Ong Boon Leong <boon.leong.ong@...el.com>
Signed-off-by: Voon, Weifeng <weifeng.voon@...el.com@...el.com>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index 3c749c3..e09522c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -460,7 +460,7 @@ static void stmmac_ethtool_gregs(struct net_device *dev,
 	} else {
 		if (!linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
 				       netdev->phydev->supported) ||
-		    linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+		    !linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
 				      netdev->phydev->supported))
 			return;
 	}
@@ -491,7 +491,7 @@ static void stmmac_ethtool_gregs(struct net_device *dev,
 	} else {
 		if (!linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,
 				       phy->supported) ||
-		    linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
+		    !linkmode_test_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
 				      phy->supported))
 			return -EOPNOTSUPP;
 	}
-- 
1.9.1