On Mon, 2014-05-05 at 14:47 -0700, Iyappan Subramanian wrote:
> +static int xgene_enet_probe(struct platform_device *pdev)
> +{
> + struct net_device *ndev;
> + struct xgene_enet_pdata *pdata;
> + struct device *dev = &pdev->dev;
> + struct napi_struct *napi;
> + int ret = 0;
> +
> + ndev = alloc_etherdev(sizeof(struct xgene_enet_pdata));
> + if (!ndev)
> + return -ENOMEM;
> +
> + pdata = netdev_priv(ndev);
> +
> + pdata->pdev = pdev;
> + pdata->ndev = ndev;
> + SET_NETDEV_DEV(ndev, dev);
> + platform_set_drvdata(pdev, pdata);
> + ndev->netdev_ops = &xgene_ndev_ops;
> + ndev->features |= NETIF_F_IP_CSUM;
> + ndev->features |= NETIF_F_GSO;
> + ndev->features |= NETIF_F_GRO;
> +
You're missing:
spin_lock_init(&pdata->stats_lock);
Lockdep (if enabled) complains:
xgene_enet_probe: 852
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 4 PID: 1 Comm: swapper/0 Not tainted 3.15.0-rc4+ #13
Call trace:
[<ffffffc000087ef4>] dump_backtrace+0x0/0x16c
[<ffffffc000088070>] show_stack+0x10/0x1c
[<ffffffc000766b04>] dump_stack+0x88/0xb8
[<ffffffc00010243c>] __lock_acquire+0x1914/0x1ce0
[<ffffffc000102fa0>] lock_acquire+0x9c/0x1d0
[<ffffffc00076d418>] _raw_spin_lock+0x40/0x58
[<ffffffc0004fced0>] xgene_enet_get_stats+0x34/0x140
[<ffffffc0005fd7dc>] dev_get_stats+0x90/0xbc
[<ffffffc00061736c>] rtnl_fill_ifinfo+0x388/0x8e4
[<ffffffc000617938>] rtmsg_ifinfo+0x70/0x10c
[<ffffffc000609e98>] register_netdevice+0x370/0x400
[<ffffffc000609f3c>] register_netdev+0x14/0x2c
[<ffffffc0004fd7ec>] xgene_enet_probe+0x1cc/0x618
[<ffffffc0004a1928>] platform_drv_probe+0x28/0x80
[<ffffffc00049fc38>] driver_probe_device+0x98/0x3ac
[<ffffffc0004a0040>] __driver_attach+0xa0/0xa8
[<ffffffc00049dd78>] bus_for_each_dev+0x54/0x98
[<ffffffc00049f65c>] driver_attach+0x1c/0x28
[<ffffffc00049f234>] bus_add_driver+0x164/0x240
[<ffffffc0004a06b8>] driver_register+0x64/0x130
[<ffffffc0004a187c>] __platform_driver_register+0x5c/0x68
[<ffffffc000c08e14>] xgene_enet_driver_init+0x14/0x20
[<ffffffc000081418>] do_one_initcall+0xc4/0x154
[<ffffffc000bd2a74>] kernel_init_freeable+0x204/0x2a8
[<ffffffc00075e8a0>] kernel_init+0xc/0xd4
> + ret = xgene_enet_get_resources(pdata);
> + if (ret)
> + goto err;
> +
> + ret = register_netdev(ndev);
--
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