netdev - Re: [PATCH net v2] net: txgbe: change LAN reset mode

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Message-ID: <516f2276-e93b-4a90-a82f-8849d5bd3ccc@lunn.ch>
Date:   Wed, 28 Jun 2023 16:44:01 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Jiawen Wu <jiawenwu@...stnetic.com>
Cc:     netdev@...r.kernel.org, mengyuanlou@...-swift.com
Subject: Re: [PATCH net v2] net: txgbe: change LAN reset mode

On Wed, Jun 28, 2023 at 11:42:04AM +0800, Jiawen Wu wrote:
> The old way to do LAN reset is sending reset command to firmware. Once
> firmware performs reset, it reconfigures what it needs.
> 
> In the new firmware versions, veto bit is introduced for NCSI/LLDP to
> block PHY domain in LAN reset. At this point, writing register of LAN
> reset directly makes the same effect as the old way. And it does not
> reset MNG domain, so that veto bit does not change.
> 
> And this change is compatible with old firmware versions, since veto
> bit was never used.

You are posting this for net, so i assume you want this back ported.
What is the real user observed problem here?

https://www.kernel.org/doc/Documentation/process/stable-kernel-rules.rst

	Andrew