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From:   Oleksij Rempel <o.rempel@pengutronix.de>
To:     Andrew Lunn <andrew@lunn.ch>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>
Cc:     Oleksij Rempel <o.rempel@pengutronix.de>, kernel@pengutronix.de,
        linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH net-next v2 1/2] net: phy: genphy_c45_baset1_an_config_aneg: do no set unknown configuration
Date:   Wed,  4 May 2022 13:06:54 +0200
Message-Id: <20220504110655.1470008-2-o.rempel@pengutronix.de>
In-Reply-To: <20220504110655.1470008-1-o.rempel@pengutronix.de>
References: <20220504110655.1470008-1-o.rempel@pengutronix.de>
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Do not change default master/slave autoneg configuration if no
changes was requested.

Fixes: 3da8ffd8545f ("net: phy: Add 10BASE-T1L support in phy-c45")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 drivers/net/phy/phy-c45.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
index eefdd67d5556..0014aa6e73c0 100644
--- a/drivers/net/phy/phy-c45.c
+++ b/drivers/net/phy/phy-c45.c
@@ -191,8 +191,12 @@ static int genphy_c45_baset1_an_config_aneg(struct phy_device *phydev)
 	case MASTER_SLAVE_CFG_MASTER_PREFERRED:
 	case MASTER_SLAVE_CFG_SLAVE_PREFERRED:
 		break;
+	case MASTER_SLAVE_CFG_UNKNOWN:
+	case MASTER_SLAVE_CFG_UNSUPPORTED:
+		return 0;
 	default:
-		break;
+		phydev_warn(phydev, "Unsupported Master/Slave mode\n");
+		return -EOPNOTSUPP;
 	}
 
 	switch (phydev->master_slave_set) {
-- 
2.30.2