netdev - [PATCH v2 2/6] net: phy: at803x: merge qca8081 salve seed function

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: <20230714063136.21368-3-quic_luoj@quicinc.com>
Date: Fri, 14 Jul 2023 14:31:32 +0800
From: Luo Jie <quic_luoj@...cinc.com>
To: <andrew@...n.ch>, <hkallweit1@...il.com>, <linux@...linux.org.uk>,
        <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Luo Jie
	<quic_luoj@...cinc.com>
Subject: [PATCH v2 2/6] net: phy: at803x: merge qca8081 salve seed function

merge the seed enablement and seed value configuration into
one function, since the random seed value is needed to be
configured when the seed is enabled.

Signed-off-by: Luo Jie <quic_luoj@...cinc.com>
---
 drivers/net/phy/at803x.c | 29 +++++++++--------------------
 1 file changed, 9 insertions(+), 20 deletions(-)

diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 11388ef3f7ef..1d4aef60d51a 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1725,24 +1725,19 @@ static int qca808x_phy_fast_retrain_config(struct phy_device *phydev)
 	return 0;
 }
 
-static int qca808x_phy_ms_random_seed_set(struct phy_device *phydev)
-{
-	u16 seed_value = get_random_u32_below(QCA808X_MASTER_SLAVE_SEED_RANGE);
-
-	return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
-			QCA808X_MASTER_SLAVE_SEED_CFG,
-			FIELD_PREP(QCA808X_MASTER_SLAVE_SEED_CFG, seed_value));
-}
-
 static int qca808x_phy_ms_seed_enable(struct phy_device *phydev, bool enable)
 {
-	u16 seed_enable = 0;
+	u16 seed_value;
 
-	if (enable)
-		seed_enable = QCA808X_MASTER_SLAVE_SEED_ENABLE;
+	if (!enable)
+		return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
+				QCA808X_MASTER_SLAVE_SEED_ENABLE, 0);
 
+	seed_value = get_random_u32_below(QCA808X_MASTER_SLAVE_SEED_RANGE);
 	return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
-			QCA808X_MASTER_SLAVE_SEED_ENABLE, seed_enable);
+			QCA808X_MASTER_SLAVE_SEED_CFG | QCA808X_MASTER_SLAVE_SEED_ENABLE,
+			FIELD_PREP(QCA808X_MASTER_SLAVE_SEED_CFG, seed_value) |
+			QCA808X_MASTER_SLAVE_SEED_ENABLE);
 }
 
 static int qca808x_config_init(struct phy_device *phydev)
@@ -1766,12 +1761,7 @@ static int qca808x_config_init(struct phy_device *phydev)
 	if (ret)
 		return ret;
 
-	/* Configure lower ramdom seed to make phy linked as slave mode */
-	ret = qca808x_phy_ms_random_seed_set(phydev);
-	if (ret)
-		return ret;
-
-	/* Enable seed */
+	/* Enable seed and configure lower ramdom seed to make phy linked as slave mode */
 	ret = qca808x_phy_ms_seed_enable(phydev, true);
 	if (ret)
 		return ret;
@@ -1816,7 +1806,6 @@ static int qca808x_read_status(struct phy_device *phydev)
 		if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR) {
 			qca808x_phy_ms_seed_enable(phydev, false);
 		} else {
-			qca808x_phy_ms_random_seed_set(phydev);
 			qca808x_phy_ms_seed_enable(phydev, true);
 		}
 	}
-- 
2.17.1