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 <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/00b4bb1e-98f9-b4e7-5549-e095a4701f66@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/mdio/mdio-mux.c b/drivers/net/mdio/mdio-mux.c
index ebd001f..a881e35 100644 (file)
--- 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;