[PATCH 1/5] net: mdio: Mask PHY only when its ACPI node is present

[Kai-Heng Feng]

Not all PHY has an ACPI node, for those nodes auto probing is still
needed.

So only mask those PHYs with ACPI nodes.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
---
 drivers/net/mdio/acpi_mdio.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mdio/acpi_mdio.c b/drivers/net/mdio/acpi_mdio.c
index d77c987fda9cd..f9369319ada19 100644
--- a/drivers/net/mdio/acpi_mdio.c
+++ b/drivers/net/mdio/acpi_mdio.c
@@ -33,8 +33,15 @@ int acpi_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode)
 	u32 addr;
 	int ret;
 
-	/* Mask out all PHYs from auto probing. */
-	mdio->phy_mask = GENMASK(31, 0);
+	/* Loop over the child nodes and mask out PHY from auto probing */
+	fwnode_for_each_child_node(fwnode, child) {
+		ret = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &addr);
+		if (ret || addr >= PHY_MAX_ADDR)
+			continue;
+
+		mdio->phy_mask |= BIT(addr);
+	}
+
 	ret = mdiobus_register(mdio);
 	if (ret)
 		return ret;
-- 
2.34.1