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SubjectRe: [patch net-next 05/11] net: hns: add uniform interface for phy connection
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On Fri, 2016-05-13 at 16:19 +0800, Yisen Zhuang wrote:
> From: Kejian Yan <yankejian@huawei.com>
>
> As device_node is only used by OF case, HNS needs to treat the others
> cases including ACPI. It needs to use uniform ways to handle both of
> OF and ACPI. This patch chooses phy_device, and of_phy_connect and
> of_phy_attach are only used by OF case. It needs to add uniform
> interface
> to handle that sequence by both OF and ACPI.

--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
> @@ -987,6 +987,41 @@ static void hns_nic_adjust_link(struct net_device
> *ndev)
>   h->dev->ops->adjust_link(h, ndev->phydev->speed, ndev-
> >phydev->duplex);
>  }
>  
> +static
> +struct phy_device *hns_nic_phy_attach(struct net_device *dev,
> +       struct phy_device *phy,
> +       u32 flags,
> +       phy_interface_t iface)
> +{
> + int ret;
> +
> + if (!phy)
> + return NULL;

No need to use defensive programming here.

> +
> + ret = phy_attach_direct(dev, phy, flags, iface);
> +
> + return ret ? NULL : phy;

Shouldn't it return an error?


> +}
> +
> +static
> +struct phy_device *hns_nic_phy_connect(struct net_device *dev,
> +        struct phy_device *phy,
> +        void (*hndlr)(struct
> net_device *),
> +        u32 flags,
> +        phy_interface_t iface)
> +{
> + int ret;
> +
> + if (!phy)
> + return NULL;
> +
> + phy->dev_flags = flags;
> +
> + ret = phy_connect_direct(dev, phy, hndlr, iface);
> +
> + return ret ? NULL : phy;
> +}
> +

For now looks that above functions are redundant and you may call them
directly in below code.
>  /**
>   *hns_nic_init_phy - init phy
>   *@ndev: net device
> @@ -996,16 +1031,17 @@ static void hns_nic_adjust_link(struct
> net_device *ndev)
>  int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
>  {
>   struct hns_nic_priv *priv = netdev_priv(ndev);
> - struct phy_device *phy_dev = NULL;
> + struct phy_device *phy_dev = h->phy_dev;
>  
> - if (!h->phy_node)
> + if (!h->phy_dev)
>   return 0;
>  
>   if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
> - phy_dev = of_phy_connect(ndev, h->phy_node,
> -  hns_nic_adjust_link, 0, h-
> >phy_if);
> + phy_dev = hns_nic_phy_connect(ndev, phy_dev,
> +       hns_nic_adjust_link,
> +       0, h->phy_if);
>   else
> - phy_dev = of_phy_attach(ndev, h->phy_node, 0, h-
> >phy_if);
> + phy_dev = hns_nic_phy_attach(ndev, phy_dev, 0, h-
> >phy_if);


--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy

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