netdev - Re: [PATCH] [PATCH net, stable 4.19.y, 1/1] net: hns: Fix WARNING when hns modules installed

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Date:   Thu, 25 Apr 2019 08:17:31 +0100
From:   Graeme Gregory <graeme.gregory@...aro.org>
To:     xiaojun2@...ilicon.com
Cc:     davem@...emloft.net, netdev@...r.kernel.org,
        marcin.juszkiewicz@...aro.org, z.liuxinliang@...ilicon.com,
        liuyonglong@...wei.com
Subject: Re: [PATCH] [PATCH net, stable 4.19.y, 1/1] net: hns: Fix WARNING
 when hns modules installed

On Tue, Apr 23, 2019 at 12:48:57AM +0800, xiaojun2@...ilicon.com wrote:
> From: Jun Xiao <xiaojun2@...ilicon.com>
> 
> Commit dfdf26babc98 upstream
> 
> this patch need merge to 4.19.y stable kernel
> 
> Fix Conflict:already fixed the confilct dfdf26babc98 with Yonglong Liu
> 
> stable candidate:user cannot connect to the internet via hns dev
> by default setting without this patch
> 
> we have already verified this patch on kunpeng916 platform,
> and it works well.
> 
> Signed-off-by: Yonglong Liu <liuyonglong@...wei.com>
> Signed-off-by: Jun Xiao <xiaojun2@...ilicon.com>

You might want to make it clear in the description that without this patch the
D05/Kunpeng916 machine oopses about 50% of the time on boot.

The rest of the time the networking on the machine is totally non functional.

Graeme

> ---
>  drivers/net/ethernet/hisilicon/hns/hns_enet.c | 15 ++++++---------
>  1 file changed, 6 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
> index 6242249..283291b 100644
> --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
> +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
> @@ -1169,6 +1169,12 @@ int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
>  	if (!h->phy_dev)
>  		return 0;
>  
> +	phy_dev->supported &= h->if_support;
> +	phy_dev->advertising = phy_dev->supported;
> +
> +	if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
> +		phy_dev->autoneg = false;
> +
>  	if (h->phy_if != PHY_INTERFACE_MODE_XGMII) {
>  		phy_dev->dev_flags = 0;
>  
> @@ -1180,15 +1186,6 @@ int hns_nic_init_phy(struct net_device *ndev, struct hnae_handle *h)
>  	if (unlikely(ret))
>  		return -ENODEV;
>  
> -	phy_dev->supported &= h->if_support;
> -	phy_dev->advertising = phy_dev->supported;
> -
> -	if (h->phy_if == PHY_INTERFACE_MODE_XGMII)
> -		phy_dev->autoneg = false;
> -
> -	if (h->phy_if == PHY_INTERFACE_MODE_SGMII)
> -		phy_stop(phy_dev);
> -
>  	return 0;
>  }
>  
> -- 
> 1.8.3.1
>