linux-kernel - [PATCH net v3 2/2] net: phy: DP83TC811: Fix WoL in config init to be disabled

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Date:   Tue, 28 Apr 2020 11:03:54 -0500
From:   Dan Murphy <dmurphy@...com>
To:     <andrew@...n.ch>, <f.fainelli@...il.com>, <hkallweit1@...il.com>
CC:     <linux@...linux.org.uk>, <davem@...emloft.net>,
        <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <afd@...com>, Dan Murphy <dmurphy@...com>
Subject: [PATCH net v3 2/2] net: phy: DP83TC811: Fix WoL in config init to be disabled

The WoL feature should be disabled when config_init is called and the
feature should turned on or off  when set_wol is called.

In addition updated the calls to modify the registers to use the set_bit
and clear_bit function calls.

Fixes: 6d749428788b ("net: phy: DP83TC811: Introduce support for the
DP83TC811 phy")
Signed-off-by: Dan Murphy <dmurphy@...com>
---
 drivers/net/phy/dp83tc811.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/net/phy/dp83tc811.c b/drivers/net/phy/dp83tc811.c
index 06f08832ebcd..d73725312c7c 100644
--- a/drivers/net/phy/dp83tc811.c
+++ b/drivers/net/phy/dp83tc811.c
@@ -139,16 +139,19 @@ static int dp83811_set_wol(struct phy_device *phydev,
 			value &= ~DP83811_WOL_SECURE_ON;
 		}
 
-		value |= (DP83811_WOL_EN | DP83811_WOL_INDICATION_SEL |
-			  DP83811_WOL_CLR_INDICATION);
-		phy_write_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
-			      value);
+		/* Clear any pending WoL interrupt */
+		phy_read(phydev, MII_DP83811_INT_STAT1);
+
+		value |= DP83811_WOL_EN | DP83811_WOL_INDICATION_SEL |
+			 DP83811_WOL_CLR_INDICATION;
+
+		return phy_write_mmd(phydev, DP83811_DEVADDR,
+				     MII_DP83811_WOL_CFG, value);
 	} else {
-		phy_clear_bits_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
-				   DP83811_WOL_EN);
+		return phy_clear_bits_mmd(phydev, DP83811_DEVADDR,
+					  MII_DP83811_WOL_CFG, DP83811_WOL_EN);
 	}
 
-	return 0;
 }
 
 static void dp83811_get_wol(struct phy_device *phydev,
@@ -292,8 +295,8 @@ static int dp83811_config_init(struct phy_device *phydev)
 
 	value = DP83811_WOL_MAGIC_EN | DP83811_WOL_SECURE_ON | DP83811_WOL_EN;
 
-	return phy_write_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
-	      value);
+	return phy_clear_bits_mmd(phydev, DP83811_DEVADDR, MII_DP83811_WOL_CFG,
+				  value);
 }
 
 static int dp83811_phy_reset(struct phy_device *phydev)
-- 
2.25.1