linux-kernel - [PATCH AUTOSEL 4.19 072/146] net: dsa: mv88e6xxx: Fix writing to a PHY page.

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Date:   Wed, 31 Oct 2018 19:04:27 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        "David S . Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.19 072/146] net: dsa: mv88e6xxx: Fix writing to a PHY page.

From: Andrew Lunn <andrew@...n.ch>

[ Upstream commit c309b158090d788e96ee597444965cb79b040484 ]

After changing to the needed page, actually write the value to the
register!

Fixes: 09cb7dfd3f14 ("net: dsa: mv88e6xxx: describe PHY page and SerDes")
Signed-off-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/dsa/mv88e6xxx/phy.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/phy.c b/drivers/net/dsa/mv88e6xxx/phy.c
index 46af8052e535..152a65d46e0b 100644
--- a/drivers/net/dsa/mv88e6xxx/phy.c
+++ b/drivers/net/dsa/mv88e6xxx/phy.c
@@ -110,6 +110,9 @@ int mv88e6xxx_phy_page_write(struct mv88e6xxx_chip *chip, int phy,
 	err = mv88e6xxx_phy_page_get(chip, phy, page);
 	if (!err) {
 		err = mv88e6xxx_phy_write(chip, phy, MV88E6XXX_PHY_PAGE, page);
+		if (!err)
+			err = mv88e6xxx_phy_write(chip, phy, reg, val);
+
 		mv88e6xxx_phy_page_put(chip, phy);
 	}
 
-- 
2.17.1