netdev - Re: [PATCH] r8169: add support for RTL8127ATF

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Message-ID: <1ca0e3ed-faab-4203-be4e-9998d6d2b7ad@gmail.com>
Date: Fri, 21 Nov 2025 14:09:08 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: Fabio Baltieri <fabio.baltieri@...il.com>
Cc: Michael Zimmermann <sigmaepsilon92@...il.com>,
 Andrew Lunn <andrew@...n.ch>, nic_swsd@...ltek.com,
 Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] r8169: add support for RTL8127ATF

On 11/21/2025 1:09 PM, Fabio Baltieri wrote:
> On Fri, Nov 21, 2025 at 12:17:33AM +0100, Heiner Kallweit wrote:
>> Could you please test whether the following fixes the chip hang on suspend / shutdown?
>>
>> diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
>> index de304d1eb..97dbe8f89 100644
>> --- a/drivers/net/ethernet/realtek/r8169_main.c
>> +++ b/drivers/net/ethernet/realtek/r8169_main.c
>> @@ -1517,11 +1517,20 @@ static enum rtl_dash_type rtl_get_dash_type(struct rtl8169_private *tp)
>>  
>>  static void rtl_set_d3_pll_down(struct rtl8169_private *tp, bool enable)
>>  {
>> -	if (tp->mac_version >= RTL_GIGA_MAC_VER_25 &&
>> -	    tp->mac_version != RTL_GIGA_MAC_VER_28 &&
>> -	    tp->mac_version != RTL_GIGA_MAC_VER_31 &&
>> -	    tp->mac_version != RTL_GIGA_MAC_VER_38)
>> -		r8169_mod_reg8_cond(tp, PMCH, D3_NO_PLL_DOWN, !enable);
>> +	switch (tp->mac_version) {
>> +	case RTL_GIGA_MAC_VER_02 ... RTL_GIGA_MAC_VER_24:
>> +	case RTL_GIGA_MAC_VER_28:
>> +	case RTL_GIGA_MAC_VER_31:
>> +	case RTL_GIGA_MAC_VER_38:
>> +		break;
>> +	case RTL_GIGA_MAC_VER_80:
>> +		r8169_mod_reg8_cond(tp, PMCH, D3_NO_PLL_DOWN, true);
>> +		break;
>> +	default:
>> +		r8169_mod_reg8_cond(tp, PMCH, D3HOT_NO_PLL_DOWN, true);
>> +		r8169_mod_reg8_cond(tp, PMCH, D3COLD_NO_PLL_DOWN, !enable);
>> +		break;
>> +	}
>>  }
>>  
>>  static void rtl_reset_packet_filter(struct rtl8169_private *tp)
> 
> Yes, patched it in and tested on both suspend and reboot without
> touching the wol flags, seems to be working correctly.
> 
Great, thanks for the feedback!

> Thanks!