[Patch net-next v4 3/6] net: dsa: microchip: lan937x: return zero if mdio node not present

From: Arun Ramadoss
Date: Thu Sep 22 2022 - 03:12:59 EST


Currently, if the mdio node is not present in the dts file then
lan937x_mdio_register return -ENODEV and entire probing process fails.
To make the mdio_register generic for all ksz series switches and to
maintain back-compatibility with existing dts file, return -ENODEV is
replaced with return 0.

Signed-off-by: Arun Ramadoss <arun.ramadoss@xxxxxxxxxxxxx>
---
drivers/net/dsa/microchip/lan937x_main.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c
index 2664331cc743..d7382a77d454 100644
--- a/drivers/net/dsa/microchip/lan937x_main.c
+++ b/drivers/net/dsa/microchip/lan937x_main.c
@@ -214,10 +214,8 @@ static int lan937x_mdio_register(struct ksz_device *dev)
int ret;

mdio_np = of_get_child_by_name(dev->dev->of_node, "mdio");
- if (!mdio_np) {
- dev_err(ds->dev, "no MDIO bus node\n");
- return -ENODEV;
- }
+ if (!mdio_np)
+ return 0;

bus = devm_mdiobus_alloc(ds->dev);
if (!bus) {
--
2.36.1