From: Heiner Kallweit <hkallweit1@gmail.com>
Date: Sat, 31 Jan 2026 17:38:56 +0000 (+0100)
Subject: net: dsa: loop: remove MDIO device modalias
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5fddafbb92e036cc768a9c93fc74f5c24e1e4a2c;p=thirdparty%2Fkernel%2Flinux.git

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@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://patch.msgid.link/15a4318f-50b5-4df5-874e-e387ee070a9d@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---

diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index 4a416f2717ba..b41254b3ac42 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);