netdev - Re: Realtek r8169: Problem with EEE on RTL8111E-VL

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Message-ID: <968d6b9f-86a6-85a1-4391-7a5ae018e2db@gmail.com>
Date:   Sun, 19 Nov 2017 00:43:44 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Chun-Hao Lin <hau@...ltek.com>, nic_swsd@...ltek.com
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Realtek r8169: Problem with EEE on RTL8111E-VL

Am 18.11.2017 um 22:33 schrieb Heiner Kallweit:
> I have a Zotac Mini-PC with a RTL8111E-VL and just by chance figured out
> that EEE is disabled on the link between my EEE-capable switch and
> this device.
> 
> After a little investigating I found that from the beginning of this
> driver advertising of EEE was disabled: See rtl8168e_2_hw_phy_config,
> line 3802, there MMD device 7, register 0x3c is set to 0 what disables
> 100BaseT and 1000BaseT EEE advertising.
> Is there any known issue with EEE on this chip justifying this?
> However, even after removing this (dev 7, reg 3c now having the correct
> value 6) no EEE is advertised.
> 
> Rgds, Heiner
> 
OK, found the issue. I will submit a patch.