openwrt/target/linux/generic/backport-5.15/769-v5.19-06-net-dsa-qca8k-unify-bus-id-naming-with-legacy-and-OF.patch

From 8d1af50842bf2774f4edc57054206e909117469b Mon Sep 17 00:00:00 2001
From: Ansuel Smith <ansuelsmth@gmail.com>
Date: Sat, 16 Apr 2022 01:30:17 +0200
Subject: [PATCH 6/6] net: dsa: qca8k: unify bus id naming with legacy and OF
 mdio bus

Add support for multiple switch with OF mdio bus declaration.
Unify the bus id naming and use the same logic for both legacy and OF
mdio bus.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/dsa/qca8k.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -1323,6 +1323,8 @@ qca8k_mdio_register(struct qca8k_priv *p
 		return -ENOMEM;
 
 	bus->priv = (void *)priv;
+	snprintf(bus->id, MII_BUS_ID_SIZE, "qca8k-%d.%d",
+		 ds->dst->index, ds->index);
 	bus->parent = ds->dev;
 	bus->phy_mask = ~ds->phys_mii_mask;
 	ds->slave_mii_bus = bus;
@@ -1330,7 +1332,6 @@ qca8k_mdio_register(struct qca8k_priv *p
 	/* Check if the devicetree declare the port:phy mapping */
 	mdio = of_get_child_by_name(priv->dev->of_node, "mdio");
 	if (of_device_is_available(mdio)) {
-		snprintf(bus->id, MII_BUS_ID_SIZE, "qca8k-%d", ds->index);
 		bus->name = "qca8k slave mii";
 		bus->read = qca8k_internal_mdio_read;
 		bus->write = qca8k_internal_mdio_write;
@@ -1340,8 +1341,6 @@ qca8k_mdio_register(struct qca8k_priv *p
 	/* If a mapping can't be found the legacy mapping is used,
 	 * using the qca8k_port_to_phy function
 	 */
-	snprintf(bus->id, MII_BUS_ID_SIZE, "qca8k-%d.%d",
-		 ds->dst->index, ds->index);
 	bus->name = "qca8k-legacy slave mii";
 	bus->read = qca8k_legacy_mdio_read;
 	bus->write = qca8k_legacy_mdio_write;