netdev - [PATCH net-next 2/3] net: dsa: loop: remove MDIO device modalias

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Message-ID: <15a4318f-50b5-4df5-874e-e387ee070a9d@gmail.com>
Date: Sat, 31 Jan 2026 18:38:56 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: Andrew Lunn <andrew@...n.ch>, Andrew Lunn <andrew+netdev@...n.ch>,
 Russell King - ARM Linux <linux@...linux.org.uk>,
 Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, David Miller <davem@...emloft.net>,
 Simon Horman <horms@...nel.org>,
 Michael Hennerich <michael.hennerich@...log.com>,
 Alexandru Tachici <alexandru.tachici@...log.com>,
 Vladimir Oltean <olteanv@...il.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next 2/3] net: dsa: loop: remove MDIO device modalias

This change is a prerequisite for removing the MDIO device modalias,
as dsa_loop is the only user. Switch from modalias to a custom
bus match function.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/dsa/dsa_loop.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index 4a416f2717b..b41254b3ac4 100644
--- a/drivers/net/dsa/dsa_loop.c
+++ b/drivers/net/dsa/dsa_loop.c
@@ -395,6 +395,12 @@ static struct mdio_driver dsa_loop_drv = {
 	.shutdown = dsa_loop_drv_shutdown,
 };
 
+static int dsa_loop_bus_match(struct device *dev,
+			      const struct device_driver *drv)
+{
+	return drv == &dsa_loop_drv.mdiodrv.driver;
+}
+
 static void dsa_loop_phydevs_unregister(void)
 {
 	for (int i = 0; i < NUM_FIXED_PHYS; i++) {
@@ -428,7 +434,7 @@ static int __init dsa_loop_create_switch_mdiodev(void)
 	if (IS_ERR(switch_mdiodev))
 		goto out;
 
-	strscpy(switch_mdiodev->modalias, "dsa-loop");
+	switch_mdiodev->bus_match = dsa_loop_bus_match;
 	switch_mdiodev->dev.platform_data = &dsa_loop_pdata;
 
 	ret = mdio_device_register(switch_mdiodev);
-- 
2.52.0