Merge branch 'of-mdio-Fall-back-to-mdiobus_register-with-NULL-device_node'

Florian Fainelli says:

====================
of: mdio: Fall back to mdiobus_register() with NULL device_node

This patch series updates of_mdiobus_register() such that when the device_node
argument is NULL, it calls mdiobus_register() directly. This is consistent with
the behavior of of_mdiobus_register() when CONFIG_OF=n.

I only converted the most obvious drivers, there are others that have a much
less obvious behavior and specifically attempt to deal with CONFIG_ACPI.

Changes in v2:

- fixed build error in davincin_mdio.c (Grygorii)
- reworked first patch a bit: commit message, subject and removed useless
  code comment
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/bcm_sf2.c

@@ -450,12 +450,8 @@ static int bcm_sf2_mdio_register(struct dsa_switch *ds)
 	priv->slave_mii_bus->parent = ds->dev->parent;
 	priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
 
-	if (dn)
 	err = of_mdiobus_register(priv->slave_mii_bus, dn);
-	else
-		err = mdiobus_register(priv->slave_mii_bus);
-
-	if (err)
+	if (err && dn)
 		of_node_put(dn);
 
 	return err;

drivers/net/dsa/mv88e6xxx/chip.c

@@ -2454,10 +2454,7 @@ static int mv88e6xxx_mdio_register(struct mv88e6xxx_chip *chip,
 			return err;
 	}
 
-	if (np)
 	err = of_mdiobus_register(bus, np);
-	else
-		err = mdiobus_register(bus);
 	if (err) {
 		dev_err(chip->dev, "Cannot register MDIO bus (%d)\n", err);
 		mv88e6xxx_g2_irq_mdio_free(chip, bus);

drivers/net/ethernet/cadence/macb_main.c

@@ -591,16 +591,10 @@ static int macb_mii_init(struct macb *bp)
 	dev_set_drvdata(&bp->dev->dev, bp->mii_bus);
 
 	np = bp->pdev->dev.of_node;
-
-	if (np) {
-		err = of_mdiobus_register(bp->mii_bus, np);
-	} else {
 	if (pdata)
 		bp->mii_bus->phy_mask = pdata->phy_mask;
 
-		err = mdiobus_register(bp->mii_bus);
-	}
-
+	err = of_mdiobus_register(bp->mii_bus, np);
 	if (err)
 		goto err_out_free_mdiobus;
 

drivers/net/ethernet/freescale/fec_main.c

@@ -2052,13 +2052,9 @@ static int fec_enet_mii_init(struct platform_device *pdev)
 	fep->mii_bus->parent = &pdev->dev;
 
 	node = of_get_child_by_name(pdev->dev.of_node, "mdio");
-	if (node) {
 	err = of_mdiobus_register(fep->mii_bus, node);
+	if (node)
 		of_node_put(node);
-	} else {
-		err = mdiobus_register(fep->mii_bus);
-	}
-
 	if (err)
 		goto err_out_free_mdiobus;
 

drivers/net/ethernet/marvell/mvmdio.c

@@ -348,10 +348,7 @@ static int orion_mdio_probe(struct platform_device *pdev)
 		goto out_mdio;
 	}
 
-	if (pdev->dev.of_node)
 	ret = of_mdiobus_register(bus, pdev->dev.of_node);
-	else
-		ret = mdiobus_register(bus);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Cannot register MDIO bus (%d)\n", ret);
 		goto out_mdio;

drivers/net/ethernet/renesas/sh_eth.c

@@ -3025,15 +3025,10 @@ static int sh_mdio_init(struct sh_eth_private *mdp,
 		 pdev->name, pdev->id);
 
 	/* register MDIO bus */
-	if (dev->of_node) {
-		ret = of_mdiobus_register(mdp->mii_bus, dev->of_node);
-	} else {
 	if (pd->phy_irq > 0)
 		mdp->mii_bus->irq[pd->phy] = pd->phy_irq;
 
-		ret = mdiobus_register(mdp->mii_bus);
-	}
-
+	ret = of_mdiobus_register(mdp->mii_bus, dev->of_node);
 	if (ret)
 		goto out_free_bus;
 

drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c

@@ -233,10 +233,7 @@ int stmmac_mdio_register(struct net_device *ndev)
 	new_bus->phy_mask = mdio_bus_data->phy_mask;
 	new_bus->parent = priv->device;
 
-	if (mdio_node)
 	err = of_mdiobus_register(new_bus, mdio_node);
-	else
-		err = mdiobus_register(new_bus);
 	if (err != 0) {
 		dev_err(dev, "Cannot register the MDIO bus\n");
 		goto bus_register_fail;

drivers/net/ethernet/ti/davinci_mdio.c

@@ -429,12 +429,10 @@ static int davinci_mdio_probe(struct platform_device *pdev)
 	 * defined to support backward compatibility with DTs which assume that
 	 * Davinci MDIO will always scan the bus for PHYs detection.
 	 */
-	if (dev->of_node && of_get_child_count(dev->of_node)) {
+	if (dev->of_node && of_get_child_count(dev->of_node))
 		data->skip_scan = true;
+
 	ret = of_mdiobus_register(data->bus, dev->of_node);
-	} else {
-		ret = mdiobus_register(data->bus);
-	}
 	if (ret)
 		goto bail_out;
 

drivers/net/phy/mdio-gpio.c

@@ -179,11 +179,7 @@ static int mdio_gpio_probe(struct platform_device *pdev)
 	if (!new_bus)
 		return -ENODEV;
 
-	if (pdev->dev.of_node)
 	ret = of_mdiobus_register(new_bus, pdev->dev.of_node);
-	else
-		ret = mdiobus_register(new_bus);
-
 	if (ret)
 		mdio_gpio_bus_deinit(&pdev->dev);
 

drivers/net/phy/mdio-mscc-miim.c

@@ -151,11 +151,7 @@ static int mscc_miim_probe(struct platform_device *pdev)
 		}
 	}
 
-	if (pdev->dev.of_node)
 	ret = of_mdiobus_register(bus, pdev->dev.of_node);
-	else
-		ret = mdiobus_register(bus);
-
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Cannot register MDIO bus (%d)\n", ret);
 		return ret;

drivers/net/usb/lan78xx.c

@@ -1843,12 +1843,9 @@ static int lan78xx_mdio_init(struct lan78xx_net *dev)
 	}
 
 	node = of_get_child_by_name(dev->udev->dev.of_node, "mdio");
-	if (node) {
 	ret = of_mdiobus_register(dev->mdiobus, node);
+	if (node)
 		of_node_put(node);
-	} else {
-		ret = mdiobus_register(dev->mdiobus);
-	}
 	if (ret) {
 		netdev_err(dev->net, "can't register MDIO bus\n");
 		goto exit1;

drivers/of/of_mdio.c

@@ -204,6 +204,9 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
 	bool scanphys = false;
 	int addr, rc;
 
+	if (!np)
+		return mdiobus_register(mdio);
+
 	/* Do not continue if the node is disabled */
 	if (!of_device_is_available(np))
 		return -ENODEV;