From 00f553660a7f524a3b913cb5cf6c5f33f9638f09 Mon Sep 17 00:00:00 2001
From: Dan Murphy <dmurphy@ti.com>
Date: Fri, 29 Jun 2018 10:35:46 -0500
Subject: net: phy: DP83TC811: Fix SGMII enable/disable

If SGMII was selected in the DT then the device should
write the SGMII enable bit.

If SGMII is not selected in the DT then the SGMII bit
should be disabled.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/phy/dp83tc811.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

(limited to 'drivers/net/phy')

diff --git a/drivers/net/phy/dp83tc811.c b/drivers/net/phy/dp83tc811.c
index f8653f5d8789..78cad134a79e 100644
--- a/drivers/net/phy/dp83tc811.c
+++ b/drivers/net/phy/dp83tc811.c
@@ -284,21 +284,19 @@ static int dp83811_config_init(struct phy_device *phydev)
 	if (err < 0)
 		return err;
 
+	value = phy_read(phydev, MII_DP83811_SGMII_CTRL);
 	if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
-		value = phy_read(phydev, MII_DP83811_SGMII_CTRL);
-		if (!(value & DP83811_SGMII_EN)) {
-			err = phy_write(phydev, MII_DP83811_SGMII_CTRL,
+		err = phy_write(phydev, MII_DP83811_SGMII_CTRL,
 					(DP83811_SGMII_EN | value));
-			if (err < 0)
-				return err;
-		} else {
-			err = phy_write(phydev, MII_DP83811_SGMII_CTRL,
-					(~DP83811_SGMII_EN & value));
-			if (err < 0)
-				return err;
-		}
+	} else {
+		err = phy_write(phydev, MII_DP83811_SGMII_CTRL,
+				(~DP83811_SGMII_EN & value));
 	}
 
+	if (err < 0)
+
+		return err;
+
 	value = DP83811_WOL_MAGIC_EN | DP83811_WOL_SECURE_ON | DP83811_WOL_EN;
 
 	return phy_write_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
-- 
cgit