netdev - Re: [PATCH v3 3/5] net: asix: Fix AX88772x resume failures

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Message-ID: <a0815b0b-2d28-cb98-3ceb-817b74e25f49@nvidia.com>
Date:   Tue, 29 Nov 2016 10:51:20 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     <allan@...x.com.tw>, <robert.foss@...labora.com>,
        <freddy@...x.com.tw>, <Dean_Jenkins@...tor.com>,
        <Mark_Craske@...tor.com>, <davem@...emloft.net>,
        <ivecera@...hat.com>, <john.stultz@...aro.org>,
        <vpalatin@...omium.org>, <stephen@...workplumber.org>,
        <grundler@...omium.org>, <changchias@...il.com>, <andrew@...n.ch>,
        <tremyfr@...il.com>, <colin.king@...onical.com>,
        <linux-usb@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <vpalatin@...gle.com>
Subject: Re: [PATCH v3 3/5] net: asix: Fix AX88772x resume failures

Hi Allan,

On 29/11/16 08:54, ASIX_Allan [Office] wrote:
> Dear Jon ,
> 
> We can reproduce your issue on x86 Linux kernel 4.9.0-rc system in our site
> and modified the following code can fix this issue. Please let us know if
> you still have problems. Thanks a lot.
> 
> static void ax88772_suspend(struct usbnet *dev)
> {
>         struct asix_common_private *priv = dev->driver_priv;
>         u16 medium;
> 
>         /* Stop MAC operation */
> -       medium = asix_read_medium_status(dev, 0);
> +      medium = asix_read_medium_status(dev, 1);
>         medium &= ~AX_MEDIUM_RE;
> -       asix_write_medium_mode(dev, medium, 0);
> +      asix_write_medium_mode(dev, medium, 1);
> 
>         netdev_dbg(dev->net, "ax88772_suspend: medium=0x%04x\n",
> -                  asix_read_medium_status(dev, 0));
> +                 asix_read_medium_status(dev, 1));
> 
>         /* Preserve BMCR for restoring */
>         priv->presvd_phy_bmcr =
>                 asix_mdio_read_nopm(dev->net, dev->mii.phy_id, MII_BMCR);
> 
>         /* Preserve ANAR for restoring */
>         priv->presvd_phy_advertise =
>                 asix_mdio_read_nopm(dev->net, dev->mii.phy_id,
> MII_ADVERTISE);
> } 

I gave this a quick test this morning and I can confirm that with the
above change I no longer see the error messages. So feel free to add my ...

Tested-by: Jon Hunter <jonathanh@...dia.com>

Cheers
Jon

-- 
nvpublic