netdev - [PATCH net 1/2] net: phy: DP83822: Fix WoL in config init to be disabled

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200423163947.18313-2-dmurphy@ti.com>
Date:   Thu, 23 Apr 2020 11:39:46 -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 1/2] net: phy: DP83822: 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: 3b427751a9d0 ("net: phy: DP83822 initial driver submission")
Signed-off-by: Dan Murphy <dmurphy@...com>
---
 drivers/net/phy/dp83822.c | 30 ++++++++++++++++--------------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c
index fe9aa3ad52a7..40fdfd043947 100644
--- a/drivers/net/phy/dp83822.c
+++ b/drivers/net/phy/dp83822.c
@@ -137,16 +137,19 @@ static int dp83822_set_wol(struct phy_device *phydev,
 			value &= ~DP83822_WOL_SECURE_ON;
 		}
 
-		value |= (DP83822_WOL_EN | DP83822_WOL_INDICATION_SEL |
-			  DP83822_WOL_CLR_INDICATION);
-		phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG,
-			      value);
+		/* Clear any pending WoL interrupt */
+		phy_read(phydev, MII_DP83822_MISR2);
+
+		value |= DP83822_WOL_EN | DP83822_WOL_INDICATION_SEL |
+			DP83822_WOL_CLR_INDICATION;
+
+		return phy_set_bits_mmd(phydev, DP83822_DEVADDR,
+					MII_DP83822_WOL_CFG, value);
 	} else {
-		value = phy_read_mmd(phydev, DP83822_DEVADDR,
-				     MII_DP83822_WOL_CFG);
-		value &= ~DP83822_WOL_EN;
-		phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG,
-			      value);
+		value = DP83822_WOL_EN | DP83822_WOL_CLR_INDICATION;
+
+		return phy_clear_bits_mmd(phydev, DP83822_DEVADDR,
+					  MII_DP83822_WOL_CFG, value);
 	}
 
 	return 0;
@@ -258,12 +261,11 @@ static int dp83822_config_intr(struct phy_device *phydev)
 
 static int dp83822_config_init(struct phy_device *phydev)
 {
-	int value;
-
-	value = DP83822_WOL_MAGIC_EN | DP83822_WOL_SECURE_ON | DP83822_WOL_EN;
+	int value = DP83822_WOL_EN | DP83822_WOL_MAGIC_EN |
+		    DP83822_WOL_SECURE_ON;
 
-	return phy_write_mmd(phydev, DP83822_DEVADDR, MII_DP83822_WOL_CFG,
-	      value);
+	return phy_clear_bits_mmd(phydev, DP83822_DEVADDR,
+				  MII_DP83822_WOL_CFG, value);
 }
 
 static int dp83822_phy_reset(struct phy_device *phydev)
-- 
2.25.1