Re: [PATCH net 01/20] net/hinic: Initialize hw interface

From: Andrew Lunn
Date: Wed Jul 12 2017 - 11:30:10 EST


> +
> +#define HINIC_DRV_NAME "HiNIC"
> +#define HINIC_DRV_VERSION "1.0"

Hi Aviad

Please don't add a driver version. There was a discussion about this
recently, how pointless it is.

> +/**
> + * hinic_init_hwdev - Initialize the NIC HW
> + * @hwdev: the NIC HW device that is returned from the initialization
> + * @pdev: the NIC pci device
> + *
> + * Return 0 - Success, negative - Failure
> + *
> + * Initialize the NIC HW device and return a pointer to it in the first arg
> + **/
> +int hinic_init_hwdev(struct hinic_hwdev **hwdev, struct pci_dev *pdev)
> +{
> + struct hinic_pfhwdev *pfhwdev;
> + struct hinic_hwif *hwif;
> + int err;
> +
> + hwif = kzalloc(sizeof(*hwif), GFP_KERNEL);

Using the devm_ functions makes your cleanup code simpler when
handling memory.

> +/**
> + * nic_dev_init - Initialize the NIC device
> + * @pdev: the NIC pci device
> + *
> + * Return 0 - Success, negative - Failure
> + **/
> +static int nic_dev_init(struct pci_dev *pdev)
> +{
> + struct hinic_dev *nic_dev;
> + struct net_device *netdev;
> + struct hinic_hwdev *hwdev;
> + int err, num_qps;
> +
> + err = hinic_init_hwdev(&hwdev, pdev);
> + if (err) {
> + dev_err(&pdev->dev, "Failed to initialize HW device\n");
> + return err;
> + }
> +
> + num_qps = hinic_hwdev_num_qps(hwdev);
> + if (num_qps <= 0) {
> + dev_err(&pdev->dev, "Invalid number of QPS\n");
> + err = -EINVAL;
> + goto num_qps_err;
> + }
> +
> + netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
> + if (!netdev) {
> + pr_err("Failed to allocate Ethernet device\n");

Above you used dev_err, here you used pr_err(). Please be consistent.

> + err = -ENOMEM;
> + goto alloc_etherdev_err;
> + }
> +
> + netdev->netdev_ops = &hinic_netdev_ops;
> +
> + nic_dev = (struct hinic_dev *)netdev_priv(netdev);
> + nic_dev->hwdev = hwdev;
> + nic_dev->netdev = netdev;
> + nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
> +
> + pci_set_drvdata(pdev, netdev);
> +
> + netif_carrier_off(netdev);
> +
> + err = register_netdev(netdev);
> + if (err) {
> + netif_err(nic_dev, probe, netdev, "Failed to register netdev\n");

probably not a good idea to use netif_err, if register_netdev just
failed. dev_err() would be better.