diff mbox series

[net-next,v2,1/2] staging: fsl-dpaa2/eth: Delay netdev_register() call

Message ID 20180829094240.27242-2-ruxandra.radulescu@nxp.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series dpaa2-eth: Move DPAA2 Ethernet driver | expand

Commit Message

Ioana Radulescu Aug. 29, 2018, 9:42 a.m. UTC
Only call netdev_register() at the end of the probe function,
once all other necessary bits and pieces are properly initialized.

We keep the rest of the netdevice initialization code in place,
at the earlier point of the probing sequence, including the
settings previously done in ndo_init.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
---
v2: new patch

 drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 71 ++++++++++++--------------
 1 file changed, 32 insertions(+), 39 deletions(-)
diff mbox series

Patch

diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
index 9329fca..559154a 100644
--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
@@ -1143,34 +1143,6 @@  static int dpaa2_eth_stop(struct net_device *net_dev)
 	return 0;
 }
 
-static int dpaa2_eth_init(struct net_device *net_dev)
-{
-	u64 supported = 0;
-	u64 not_supported = 0;
-	struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
-	u32 options = priv->dpni_attrs.options;
-
-	/* Capabilities listing */
-	supported |= IFF_LIVE_ADDR_CHANGE;
-
-	if (options & DPNI_OPT_NO_MAC_FILTER)
-		not_supported |= IFF_UNICAST_FLT;
-	else
-		supported |= IFF_UNICAST_FLT;
-
-	net_dev->priv_flags |= supported;
-	net_dev->priv_flags &= ~not_supported;
-
-	/* Features */
-	net_dev->features = NETIF_F_RXCSUM |
-			    NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
-			    NETIF_F_SG | NETIF_F_HIGHDMA |
-			    NETIF_F_LLTX;
-	net_dev->hw_features = net_dev->features;
-
-	return 0;
-}
-
 static int dpaa2_eth_set_addr(struct net_device *net_dev, void *addr)
 {
 	struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
@@ -1418,7 +1390,6 @@  static const struct net_device_ops dpaa2_eth_ops = {
 	.ndo_open = dpaa2_eth_open,
 	.ndo_start_xmit = dpaa2_eth_tx,
 	.ndo_stop = dpaa2_eth_stop,
-	.ndo_init = dpaa2_eth_init,
 	.ndo_set_mac_address = dpaa2_eth_set_addr,
 	.ndo_get_stats64 = dpaa2_eth_get_stats,
 	.ndo_set_rx_mode = dpaa2_eth_set_rx_mode,
@@ -2316,11 +2287,14 @@  static int netdev_init(struct net_device *net_dev)
 {
 	struct device *dev = net_dev->dev.parent;
 	struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+	u32 options = priv->dpni_attrs.options;
+	u64 supported = 0, not_supported = 0;
 	u8 bcast_addr[ETH_ALEN];
 	u8 num_queues;
 	int err;
 
 	net_dev->netdev_ops = &dpaa2_eth_ops;
+	net_dev->ethtool_ops = &dpaa2_ethtool_ops;
 
 	err = set_mac_addr(priv);
 	if (err)
@@ -2356,12 +2330,23 @@  static int netdev_init(struct net_device *net_dev)
 		return err;
 	}
 
-	/* Our .ndo_init will be called herein */
-	err = register_netdev(net_dev);
-	if (err < 0) {
-		dev_err(dev, "register_netdev() failed\n");
-		return err;
-	}
+	/* Capabilities listing */
+	supported |= IFF_LIVE_ADDR_CHANGE;
+
+	if (options & DPNI_OPT_NO_MAC_FILTER)
+		not_supported |= IFF_UNICAST_FLT;
+	else
+		supported |= IFF_UNICAST_FLT;
+
+	net_dev->priv_flags |= supported;
+	net_dev->priv_flags &= ~not_supported;
+
+	/* Features */
+	net_dev->features = NETIF_F_RXCSUM |
+			    NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+			    NETIF_F_SG | NETIF_F_HIGHDMA |
+			    NETIF_F_LLTX;
+	net_dev->hw_features = net_dev->features;
 
 	return 0;
 }
@@ -2561,28 +2546,36 @@  static int dpaa2_eth_probe(struct fsl_mc_device *dpni_dev)
 	if (err)
 		goto err_alloc_rings;
 
-	net_dev->ethtool_ops = &dpaa2_ethtool_ops;
-
 	err = setup_irqs(dpni_dev);
 	if (err) {
 		netdev_warn(net_dev, "Failed to set link interrupt, fall back to polling\n");
 		priv->poll_thread = kthread_run(poll_link_state, priv,
 						"%s_poll_link", net_dev->name);
 		if (IS_ERR(priv->poll_thread)) {
-			netdev_err(net_dev, "Error starting polling thread\n");
+			dev_err(dev, "Error starting polling thread\n");
 			goto err_poll_thread;
 		}
 		priv->do_link_poll = true;
 	}
 
+	err = register_netdev(net_dev);
+	if (err < 0) {
+		dev_err(dev, "register_netdev() failed\n");
+		goto err_netdev_reg;
+	}
+
 	dev_info(dev, "Probed interface %s\n", net_dev->name);
 	return 0;
 
+err_netdev_reg:
+	if (priv->do_link_poll)
+		kthread_stop(priv->poll_thread);
+	else
+		fsl_mc_free_irqs(dpni_dev);
 err_poll_thread:
 	free_rings(priv);
 err_alloc_rings:
 err_csum:
-	unregister_netdev(net_dev);
 err_netdev_init:
 	free_percpu(priv->percpu_extras);
 err_alloc_percpu_extras: