net: sxgbe: Added phy_found error path

This patch adds phy_found error path when there is no phy device
and changes bus_name.

Signed-off-by: Byungho An <bh74.an@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c
index 01af2cbb479d..43ccb4a6de15 100644
--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c
+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c
@@ -27,7 +27,7 @@
 #define SXGBE_SMA_PREAD_CMD     0x02 /* post read  increament address */
 #define SXGBE_SMA_READ_CMD      0x03 /* read command */
 #define SXGBE_SMA_SKIP_ADDRFRM  0x00040000 /* skip the address frame */
-#define SXGBE_MII_BUSY          0x00800000 /* mii busy */
+#define SXGBE_MII_BUSY          0x00400000 /* mii busy */
 
 static int sxgbe_mdio_busy_wait(void __iomem *ioaddr, unsigned int mii_data)
 {
@@ -147,6 +147,7 @@ int sxgbe_mdio_register(struct net_device *ndev)
         struct sxgbe_mdio_bus_data *mdio_data = priv->plat->mdio_bus_data;
         int err, phy_addr;
         int *irqlist;
+        bool phy_found = false;
         bool act;
 
         /* allocate the new mdio bus */
@@ -162,7 +163,7 @@ int sxgbe_mdio_register(struct net_device *ndev)
                 irqlist = priv->mii_irq;
 
         /* assign mii bus fields */
-        mdio_bus->name = "samsxgbe";
+        mdio_bus->name = "sxgbe";
         mdio_bus->read = &sxgbe_mdio_read;
         mdio_bus->write = &sxgbe_mdio_write;
         snprintf(mdio_bus->id, MII_BUS_ID_SIZE, "%s-%x",
@@ -216,13 +217,22 @@ int sxgbe_mdio_register(struct net_device *ndev)
                         netdev_info(ndev, "PHY ID %08x at %d IRQ %s (%s)%s\n",
                                     phy->phy_id, phy_addr, irq_str,
                                     dev_name(&phy->dev), act ? " active" : "");
+                        phy_found = true;
                 }
         }
 
+        if (!phy_found) {
+                netdev_err(ndev, "PHY not found\n");
+                goto phyfound_err;
+        }
+
         priv->mii = mdio_bus;
 
         return 0;
 
+phyfound_err:
+        err = -ENODEV;
+        mdiobus_unregister(mdio_bus);
 mdiobus_err:
         mdiobus_free(mdio_bus);
         return err;