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From 2bad6512b242b3b5f41414a830d7224d504d0825 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Tue, 15 Nov 2011 14:52:21 +0100
Subject: [PATCH 19/73] NET: MIPS: lantiq: non existing phy was not handled
gracefully
The code blindly assumed that that a PHY device was present causing a BadVA.
In addition the driver should not fail to load incase no PHY was found.
Instead we print the following line and continue with no attached PHY.
etop: mdio probe failed
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: netdev@vger.kernel.org
---
drivers/net/ethernet/lantiq_etop.c | 14 ++++++++------
1 files changed, 8 insertions(+), 6 deletions(-)
--- a/drivers/net/ethernet/lantiq_etop.c
+++ b/drivers/net/ethernet/lantiq_etop.c
@@ -612,7 +612,8 @@ ltq_etop_open(struct net_device *dev)
ltq_dma_open(&ch->dma);
napi_enable(&ch->napi);
}
- phy_start(priv->phydev);
+ if (priv->phydev)
+ phy_start(priv->phydev);
netif_tx_start_all_queues(dev);
return 0;
}
@@ -624,7 +625,8 @@ ltq_etop_stop(struct net_device *dev)
int i;
netif_tx_stop_all_queues(dev);
- phy_stop(priv->phydev);
+ if (priv->phydev)
+ phy_stop(priv->phydev);
for (i = 0; i < MAX_DMA_CHAN; i++) {
struct ltq_etop_chan *ch = &priv->ch[i];
@@ -770,9 +772,10 @@ ltq_etop_init(struct net_device *dev)
if (err)
goto err_netdev;
ltq_etop_set_multicast_list(dev);
- err = ltq_etop_mdio_init(dev);
- if (err)
- goto err_netdev;
+ if (!ltq_etop_mdio_init(dev))
+ dev->ethtool_ops = <q_etop_ethtool_ops;
+ else
+ pr_warn("etop: mdio probe failed\n");;
return 0;
err_netdev:
@@ -868,7 +871,6 @@ ltq_etop_probe(struct platform_device *p
dev = alloc_etherdev_mq(sizeof(struct ltq_etop_priv), 4);
strcpy(dev->name, "eth%d");
dev->netdev_ops = <q_eth_netdev_ops;
- dev->ethtool_ops = <q_etop_ethtool_ops;
priv = netdev_priv(dev);
priv->res = res;
priv->pldata = dev_get_platdata(&pdev->dev);
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