net: pch_gbe: Add driver remove support

In pch_gbe_probe(), some additional resources are allocated
(eg: mdio, phy). We should free these in the driver remove phase.
Add pch_gbe_remove() to clean it up.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/drivers/net/pch_gbe.c b/drivers/net/pch_gbe.c
index 004fcf88c207066b3b6aa03e3d9010c38561e07f..dfc01000fc4ca380ea413fcf9373c397acd68760 100644 (file)
--- a/drivers/net/pch_gbe.c
+++ b/drivers/net/pch_gbe.c
@@ -452,6 +452,17 @@ int pch_gbe_probe(struct udevice *dev)
        return pch_gbe_phy_init(dev);
 }
 
+int pch_gbe_remove(struct udevice *dev)
+{
+       struct pch_gbe_priv *priv = dev_get_priv(dev);
+
+       free(priv->phydev);
+       mdio_unregister(priv->bus);
+       mdio_free(priv->bus);
+
+       return 0;
+}
+
 static const struct eth_ops pch_gbe_ops = {
        .start = pch_gbe_start,
        .send = pch_gbe_send,
@@ -470,6 +481,7 @@ U_BOOT_DRIVER(eth_pch_gbe) = {
        .id = UCLASS_ETH,
        .of_match = pch_gbe_ids,
        .probe = pch_gbe_probe,
+       .remove = pch_gbe_remove,
        .ops = &pch_gbe_ops,
        .priv_auto_alloc_size = sizeof(struct pch_gbe_priv),
        .platdata_auto_alloc_size = sizeof(struct eth_pdata),