netdev - [PATCH net-next v2 4/4] net: phy: marvell10g: check for newly set aneg

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Message-ID: <8fa90a90-a541-2a70-c783-8ba12f965493@gmail.com>
Date:   Sun, 17 Feb 2019 09:40:05 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        David Miller <davem@...emloft.net>,
        Russell King - ARM Linux <linux@...linux.org.uk>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next v2 4/4] net: phy: marvell10g: check for newly set
 aneg

Even if the advertisement registers content didn't change, we may have
just switched to aneg, and therefore have to trigger an aneg restart.
This matches the behavior of genphy_config_aneg().

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/net/phy/marvell10g.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/phy/marvell10g.c b/drivers/net/phy/marvell10g.c
index 895574083..b83eb19cf 100644
--- a/drivers/net/phy/marvell10g.c
+++ b/drivers/net/phy/marvell10g.c
@@ -296,6 +296,16 @@ static int mv3310_config_aneg(struct phy_device *phydev)
 	if (ret > 0)
 		changed = true;
 
+	if (!changed) {
+		/* Configure and restart aneg if it wasn't set before */
+		ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1);
+		if (ret < 0)
+			return ret;
+
+		if (!(ret & MDIO_AN_CTRL1_ENABLE))
+			changed = 1;
+	}
+
 	if (changed)
 		ret = genphy_c45_restart_aneg(phydev);
 
-- 
2.20.1