linux-kernel - [PATCH net] net: phy: dp83822: disable MDI crossover status change interrupt

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Message-ID: <20221018104755.30025-1-svc.sw.rte.linux@sma.de>
Date:   Tue, 18 Oct 2022 12:47:54 +0200
From:   Felix Riemann <svc.sw.rte.linux@....de>
To:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        <netdev@...r.kernel.org>
CC:     <linux-kernel@...r.kernel.org>,
        Felix Riemann <felix.riemann@....de>
Subject: [PATCH net] net: phy: dp83822: disable MDI crossover status change interrupt

From: Felix Riemann <felix.riemann@....de>

If the cable is disconnected the PHY seems to toggle between MDI and
MDI-X modes. With the MDI crossover status interrupt active this causes
roughly 10 interrupts per second.

As the crossover status isn't checked by the driver, the interrupt can
be disabled to reduce the interrupt load.

Fixes: 87461f7a58ab ("net: phy: DP83822 initial driver submission")
Signed-off-by: Felix Riemann <felix.riemann@....de>
---
 drivers/net/phy/dp83822.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c
index 8549e0e356c9..b60db8b6f477 100644
--- a/drivers/net/phy/dp83822.c
+++ b/drivers/net/phy/dp83822.c
@@ -254,8 +254,7 @@ static int dp83822_config_intr(struct phy_device *phydev)
 				DP83822_EEE_ERROR_CHANGE_INT_EN);
 
 		if (!dp83822->fx_enabled)
-			misr_status |= DP83822_MDI_XOVER_INT_EN |
-				       DP83822_ANEG_ERR_INT_EN |
+			misr_status |= DP83822_ANEG_ERR_INT_EN |
 				       DP83822_WOL_PKT_INT_EN;
 
 		err = phy_write(phydev, MII_DP83822_MISR2, misr_status);
-- 
2.35.3