diff options
| author | Moritz Fischer <mdf@kernel.org> | 2019-02-04 20:30:38 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-05 21:34:34 +0300 |
| commit | dd648818dad3ad5ab5151c7f5ca0bb55a0bf71de (patch) | |
| tree | dd183c09bab2ce91f812b204525ea5e011cb0c6e /drivers/net/ethernet/ni | |
| parent | 5468e82f7034f0ae175a3ce075441356099bdaa3 (diff) | |
| download | linux-dd648818dad3ad5ab5151c7f5ca0bb55a0bf71de.tar.xz | |
net: nixge: Make mdio child node optional
Make MDIO child optional and only instantiate the
MDIO bus if the child is actually present.
There are currently no (in-tree) users of this
binding; all (out-of-tree) users use overlays that
get shipped together with the FPGA images that contain
the IP.
This will significantly increase maintainabilty
of future revisions of this IP.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ni')
| -rw-r--r-- | drivers/net/ethernet/ni/nixge.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/net/ethernet/ni/nixge.c b/drivers/net/ethernet/ni/nixge.c index 73a98bd2fcd2..c8dd1e4c759d 100644 --- a/drivers/net/ethernet/ni/nixge.c +++ b/drivers/net/ethernet/ni/nixge.c @@ -1284,6 +1284,7 @@ static int nixge_probe(struct platform_device *pdev) { struct nixge_priv *priv; struct net_device *ndev; + struct device_node *mn; const u8 *mac_addr; int err; @@ -1335,10 +1336,14 @@ static int nixge_probe(struct platform_device *pdev) priv->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD; priv->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD; - err = nixge_mdio_setup(priv, pdev->dev.of_node); - if (err) { - netdev_err(ndev, "error registering mdio bus"); - goto free_netdev; + mn = of_get_child_by_name(pdev->dev.of_node, "mdio"); + if (mn) { + err = nixge_mdio_setup(priv, mn); + of_node_put(mn); + if (err) { + netdev_err(ndev, "error registering mdio bus"); + goto free_netdev; + } } priv->phy_mode = of_get_phy_mode(pdev->dev.of_node); @@ -1364,7 +1369,8 @@ static int nixge_probe(struct platform_device *pdev) return 0; unregister_mdio: - mdiobus_unregister(priv->mii_bus); + if (priv->mii_bus) + mdiobus_unregister(priv->mii_bus); free_netdev: free_netdev(ndev); @@ -1379,7 +1385,8 @@ static int nixge_remove(struct platform_device *pdev) unregister_netdev(ndev); - mdiobus_unregister(priv->mii_bus); + if (priv->mii_bus) + mdiobus_unregister(priv->mii_bus); free_netdev(ndev); |