linux-kernel - [PATCH net-next 4/4] net: phy: xpcs: Reset XPCS upon probe

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Message-Id: <422e8e739c9a2a2e64ac5eac44436e20f2a03174.1584106347.git.Jose.Abreu@synopsys.com>
Date:   Fri, 13 Mar 2020 14:39:43 +0100
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     netdev@...r.kernel.org
Cc:     Joao Pinto <Joao.Pinto@...opsys.com>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 4/4] net: phy: xpcs: Reset XPCS upon probe

Reset the XPCS upon probe stage so that we start it from well known
state.

Signed-off-by: Jose Abreu <Jose.Abreu@...opsys.com>

---
Cc: Jose Abreu <Jose.Abreu@...opsys.com>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Florian Fainelli <f.fainelli@...il.com>
Cc: Heiner Kallweit <hkallweit1@...il.com>
Cc: Russell King <linux@...linux.org.uk>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/net/phy/mdio-xpcs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/phy/mdio-xpcs.c b/drivers/net/phy/mdio-xpcs.c
index 83ced7180a44..7960dc52c4bd 100644
--- a/drivers/net/phy/mdio-xpcs.c
+++ b/drivers/net/phy/mdio-xpcs.c
@@ -595,7 +595,7 @@ static int xpcs_probe(struct mdio_xpcs_args *xpcs, phy_interface_t interface)
 			match = entry;
 
 			if (xpcs_check_features(xpcs, match, interface))
-				return 0;
+				return xpcs_soft_reset(xpcs, MDIO_MMD_PCS);
 		}
 	}
 
-- 
2.7.4