net: mdio-mux: add bus name to bus id

In case of DT-configured systems it may be hard to identify the PHY interrupt in the /proc/interrupts output. Therefore add the name to the id to make clearer that it's about a device on a muxed mdio bus. In my case: Now: mdio_mux-0.e40908ff:08 Before: 0.e40908ff:08 Signed-off-by: Heiner Kallweit <[email protected]> Reviewed-by: Andrew Lunn <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Paolo Abeni <[email protected]>
josf · Mar 8, 2022 · 1416ea0 · 1416ea0
1 parent 69adcb9
commit 1416ea0
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/drivers/net/mdio/mdio-mux.c b/drivers/net/mdio/mdio-mux.c
@@ -168,8 +168,8 @@ int mdio_mux_init(struct device *dev,
 		cb->mii_bus->priv = cb;
 
 		cb->mii_bus->name = "mdio_mux";
-		snprintf(cb->mii_bus->id, MII_BUS_ID_SIZE, "%x.%x",
-			 pb->parent_id, v);
+		snprintf(cb->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x.%x",
+			 cb->mii_bus->name, pb->parent_id, v);
 		cb->mii_bus->parent = dev;
 		cb->mii_bus->read = mdio_mux_read;
 		cb->mii_bus->write = mdio_mux_write;