phylib: move to dynamic allocation of struct mii_bus

This patch introduces mdiobus_alloc() and mdiobus_free(), and
makes all mdio bus drivers use these functions to allocate their
struct mii_bus'es dynamically.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Andy Fleming <afleming@freescale.com>

1 files changed, 30 insertions, 21 deletions

diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index ec6b0af3d46..017a5361b98 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -302,13 +302,7 @@ static int cpmac_mdio_reset(struct mii_bus *bus)
 
 static int mii_irqs[PHY_MAX_ADDR] = { PHY_POLL, };
 
-static struct mii_bus cpmac_mii = {
-	.name = "cpmac-mii",
-	.read = cpmac_mdio_read,
-	.write = cpmac_mdio_write,
-	.reset = cpmac_mdio_reset,
-	.irq = mii_irqs,
-};
+static struct mii_bus *cpmac_mii;
 
 static int cpmac_config(struct net_device *dev, struct ifmap *map)
 {
@@ -1116,7 +1110,7 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
 	for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
 		if (!(pdata->phy_mask & (1 << phy_id)))
 			continue;
-		if (!cpmac_mii.phy_map[phy_id])
+		if (!cpmac_mii->phy_map[phy_id])
 			continue;
 		break;
 	}
@@ -1168,7 +1162,7 @@ static int __devinit cpmac_probe(struct platform_device *pdev)
 	priv->msg_enable = netif_msg_init(debug_level, 0xff);
 	memcpy(dev->dev_addr, pdata->dev_addr, sizeof(dev->dev_addr));
 
-	priv->phy = phy_connect(dev, cpmac_mii.phy_map[phy_id]->dev.bus_id,
+	priv->phy = phy_connect(dev, cpmac_mii->phy_map[phy_id]->dev.bus_id,
 				&cpmac_adjust_link, 0, PHY_INTERFACE_MODE_MII);
 	if (IS_ERR(priv->phy)) {
 		if (netif_msg_drv(priv))
@@ -1216,11 +1210,22 @@ int __devinit cpmac_init(void)
 	u32 mask;
 	int i, res;
 
-	cpmac_mii.priv = ioremap(AR7_REGS_MDIO, 256);
+	cpmac_mii = mdiobus_alloc();
+	if (cpmac_mii == NULL)
+		return -ENOMEM;
+
+	cpmac_mii->name = "cpmac-mii";
+	cpmac_mii->read = cpmac_mdio_read;
+	cpmac_mii->write = cpmac_mdio_write;
+	cpmac_mii->reset = cpmac_mdio_reset;
+	cpmac_mii->irq = mii_irqs;
+
+	cpmac_mii->priv = ioremap(AR7_REGS_MDIO, 256);
 
-	if (!cpmac_mii.priv) {
+	if (!cpmac_mii->priv) {
 		printk(KERN_ERR "Can't ioremap mdio registers\n");
-		return -ENXIO;
+		res = -ENXIO;
+		goto fail_alloc;
 	}
 
 #warning FIXME: unhardcode gpio&reset bits
@@ -1230,10 +1235,10 @@ int __devinit cpmac_init(void)
 	ar7_device_reset(AR7_RESET_BIT_CPMAC_HI);
 	ar7_device_reset(AR7_RESET_BIT_EPHY);
 
-	cpmac_mii.reset(&cpmac_mii);
+	cpmac_mii->reset(cpmac_mii);
 
 	for (i = 0; i < 300000; i++)
-		if ((mask = cpmac_read(cpmac_mii.priv, CPMAC_MDIO_ALIVE)))
+		if ((mask = cpmac_read(cpmac_mii->priv, CPMAC_MDIO_ALIVE)))
 			break;
 		else
 			cpu_relax();
@@ -1244,10 +1249,10 @@ int __devinit cpmac_init(void)
 		mask = 0;
 	}
 
-	cpmac_mii.phy_mask = ~(mask | 0x80000000);
-	snprintf(cpmac_mii.id, MII_BUS_ID_SIZE, "0");
+	cpmac_mii->phy_mask = ~(mask | 0x80000000);
+	snprintf(cpmac_mii->id, MII_BUS_ID_SIZE, "0");
 
-	res = mdiobus_register(&cpmac_mii);
+	res = mdiobus_register(cpmac_mii);
 	if (res)
 		goto fail_mii;
 
@@ -1258,10 +1263,13 @@ int __devinit cpmac_init(void)
 	return 0;
 
 fail_cpmac:
-	mdiobus_unregister(&cpmac_mii);
+	mdiobus_unregister(cpmac_mii);
 
 fail_mii:
-	iounmap(cpmac_mii.priv);
+	iounmap(cpmac_mii->priv);
+
+fail_alloc:
+	mdiobus_free(cpmac_mii);
 
 	return res;
 }
@@ -1269,8 +1277,9 @@ fail_mii:
 void __devexit cpmac_exit(void)
 {
 	platform_driver_unregister(&cpmac_driver);
-	mdiobus_unregister(&cpmac_mii);
-	iounmap(cpmac_mii.priv);
+	mdiobus_unregister(cpmac_mii);
+	mdiobus_free(cpmac_mii);
+	iounmap(cpmac_mii->priv);
 }
 
 module_init(cpmac_init);