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From: Sasha Neftin <sasha.neftin@intel.com>
To: Andrew Lunn <andrew@lunn.ch>, Ricky Wu <en-wei.wu@canonical.com>
Cc: <netdev@vger.kernel.org>, <rickywu0421@gmail.com>,
	<linux-kernel@vger.kernel.org>, <edumazet@google.com>,
	<intel-wired-lan@lists.osuosl.org>, <kuba@kernel.org>,
	<anthony.l.nguyen@intel.com>, <pabeni@redhat.com>,
	<davem@davemloft.net>, "Ruinskiy, Dima" <dima.ruinskiy@intel.com>,
	"Lifshits, Vitaly" <vitaly.lifshits@intel.com>,
	naamax.meir <naamax.meir@linux.intel.com>,
	"Avivi, Amir" <amir.avivi@intel.com>,
	"Nguyen, Anthony L" <anthony.l.nguyen@intel.com>,
	"Keller, Jacob E" <jacob.e.keller@intel.com>
Subject: Re: [Intel-wired-lan] [PATCH v2 2/2] e1000e: fix link fluctuations problem
Date: Wed, 8 May 2024 08:05:29 +0300	[thread overview]
Message-ID: <514e990b-50c6-419b-96f2-09c3d04a2fda@intel.com> (raw)
In-Reply-To: <83a2c15e-12ef-4a33-a1f1-8801acb78724@lunn.ch>

On 07/05/2024 15:31, Andrew Lunn wrote:
> On Fri, May 03, 2024 at 06:18:36PM +0800, Ricky Wu wrote:
>> As described in https://bugzilla.kernel.org/show_bug.cgi?id=218642,
>> Intel I219-LM reports link up -> link down -> link up after hot-plugging
>> the Ethernet cable.
> 
> Please could you quote some parts of 802.3 which state this is a
> problem. How is this breaking the standard.
> 
> 	Andrew

In I219-* parts used LSI PHY. This PHY is compliant with the 802.3 IEEE 
standard if I recall correctly. Auto-negotiation and link establishment 
are processed following the IEEE standard and could vary from platform 
to platform but are not violent to the IEEE standard.

En-Wei, My recommendation is not to accept these patches. If you think 
there is a HW/PHY problem - open a ticket on Intel PAE.

Sasha

  reply	other threads:[~2024-05-08  5:05 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-03 10:18 [PATCH v2 2/2] e1000e: fix link fluctuations problem Ricky Wu
2024-05-07 12:31 ` Andrew Lunn
2024-05-08  5:05   ` Sasha Neftin [this message]
2024-05-09  9:13     ` [Intel-wired-lan] " Ruinskiy, Dima
2024-05-09 13:46       ` Andrew Lunn
2024-05-09 17:40         ` En-Wei WU
2024-05-10  9:55         ` Sasha Neftin
2024-05-10 12:32           ` Andrew Lunn
2024-05-13  6:04             ` Sasha Neftin

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