linux-kernel - Re: [PATCH] net: usb: ax88179_178a: fix link status when link is set to down/up

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Message-ID: <CAMSo37UyC-JRfZjd83Vx2+W-K-WqxAN9sHJ88Jev67Fnwci_pg@mail.gmail.com>
Date: Sat, 25 May 2024 04:08:10 +0800
From: Yongqin Liu <yongqin.liu@...aro.org>
To: Jose Ignacio Tornos Martinez <jtornosm@...hat.com>
Cc: davem@...emloft.net, edumazet@...gle.com, inventor500@...aldi.net, 
	kuba@...nel.org, linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, 
	netdev@...r.kernel.org, pabeni@...hat.com, stable@...r.kernel.org
Subject: Re: [PATCH] net: usb: ax88179_178a: fix link status when link is set
 to down/up

Hi, Jose

On Thu, 23 May 2024 at 14:45, Jose Ignacio Tornos Martinez
<jtornosm@...hat.com> wrote:
>
> Hello Yongqin,
>
> Again, not a lot of information from the logs, but perhaps you coud give me
> more information for your scenario.
>
> Could you try to execute the down interface operation, mac assignment and
> the up interface operation from command line?
> That works for me.
When I tried the down and up operations manually from the command line,
it worked.
But it only worked after I ran the down and up operations after the boot.
It fails to work by default after the boot for both the fresh deployment,
and for the later reboot

One thing I noticed is that the following message was printed twice
    "ax88179_178a 2-3:1.0 eth0: ax88179 - Link status is: 1"
after I ran the up operation,

Is that expected?

For details, please check the log here:
https://gist.github.com/liuyq/be8f5305d538067a344001f1d35f677b

> Maybe some synchronization issue is happening in your boot operation.
> Could you provide more information about how/when you are doing the
> commented operations to try to reproduce?

The scripts are simple, here are the two scripts for Android build:
    https://android.googlesource.com/device/linaro/dragonboard/+/refs/heads/main/shared/utils/ethaddr/ethaddr.rc
    https://android.googlesource.com/device/linaro/dragonboard/+/refs/heads/main/shared/utils/ethaddr/set_ethaddr.sh

Is the one to run the down/change mac/up operations script.

Not sure why the up in the script does not work, but works when run manually.

--
Best Regards,
Yongqin Liu
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