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path: root/drivers/net/phy/mdio-mux.c
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Diffstat (limited to 'drivers/net/phy/mdio-mux.c')
-rw-r--r--drivers/net/phy/mdio-mux.c26
1 files changed, 18 insertions, 8 deletions
diff --git a/drivers/net/phy/mdio-mux.c b/drivers/net/phy/mdio-mux.c
index 599ce24c514f..00755b6a42cf 100644
--- a/drivers/net/phy/mdio-mux.c
+++ b/drivers/net/phy/mdio-mux.c
@@ -133,29 +133,35 @@ int mdio_mux_init(struct device *dev,
ret_val = -ENODEV;
for_each_available_child_of_node(dev->of_node, child_bus_node) {
- u32 v;
+ int v;
- r = of_property_read_u32(child_bus_node, "reg", &v);
- if (r)
+ v = of_mdio_parse_addr(dev, child_bus_node);
+ if (v < 0) {
+ dev_err(dev,
+ "Error: Failed to find reg for child %s\n",
+ of_node_full_name(child_bus_node));
continue;
+ }
cb = devm_kzalloc(dev, sizeof(*cb), GFP_KERNEL);
if (cb == NULL) {
dev_err(dev,
- "Error: Failed to allocate memory for child\n");
+ "Error: Failed to allocate memory for child %s\n",
+ of_node_full_name(child_bus_node));
ret_val = -ENOMEM;
- of_node_put(child_bus_node);
- break;
+ continue;
}
cb->bus_number = v;
cb->parent = pb;
cb->mii_bus = mdiobus_alloc();
if (!cb->mii_bus) {
+ dev_err(dev,
+ "Error: Failed to allocate MDIO bus for child %s\n",
+ of_node_full_name(child_bus_node));
ret_val = -ENOMEM;
devm_kfree(dev, cb);
- of_node_put(child_bus_node);
- break;
+ continue;
}
cb->mii_bus->priv = cb;
@@ -167,6 +173,9 @@ int mdio_mux_init(struct device *dev,
cb->mii_bus->write = mdio_mux_write;
r = of_mdiobus_register(cb->mii_bus, child_bus_node);
if (r) {
+ dev_err(dev,
+ "Error: Failed to register MDIO bus for child %s\n",
+ of_node_full_name(child_bus_node));
mdiobus_free(cb->mii_bus);
devm_kfree(dev, cb);
} else {
@@ -180,6 +189,7 @@ int mdio_mux_init(struct device *dev,
return 0;
}
+ dev_err(dev, "Error: No acceptable child buses found\n");
devm_kfree(dev, pb);
err_pb_kz:
/* balance the reference of_mdio_find_bus() took */