Re: [PATCH 3/3] net: phy: mediatek-ge: do not disable EEE advertisement

[Arınç ÜNAL]

On 18.03.2024 10:46, Arınç ÜNAL via B4 Relay wrote:
> From: Arınç ÜNAL <arinc.unal@xxxxxxxxxx>
>
> There's no need to disable Energy-Efficient Ethernet (EEE) advertisement on
> the MT7530 and MT7531 switch PHYs. EEE works fine on MT7530 and MT7531
> switch PHYs. Remove the code where EEE advertisement is disabled.
>
> This is a bugfix because there's a possible race condition where the
> mediatek-ge driver would kick in after the MT7530 DSA subdriver which would
> have EEE disabled until manually enabled.

Can I get an opinion on this? Is it actually possible that the PHY driver
would start probing after the DSA subdriver? On the console logs for the
DSA subdriver, I can see that the name of the PHY driver will appear, which
makes me believe the PHY driver would actually never probe after the DSA
subdriver.

[    4.402641] mt7530-mdio mdio-bus:1f wan (uninitialized): PHY [mt7530-0:00] driver [MediaTek MT7530 PHY] (irq=POLL)
[    4.420392] mt7530-mdio mdio-bus:1f lan0 (uninitialized): PHY [mt7530-0:01] driver [MediaTek MT7530 PHY] (irq=POLL)
[    4.437791] mt7530-mdio mdio-bus:1f lan1 (uninitialized): PHY [mt7530-0:02] driver [MediaTek MT7530 PHY] (irq=POLL)
[    4.455096] mt7530-mdio mdio-bus:1f lan2 (uninitialized): PHY [mt7530-0:03] driver [MediaTek MT7530 PHY] (irq=POLL)
[    4.472422] mt7530-mdio mdio-bus:1f lan3 (uninitialized): PHY [mt7530-0:04] driver [MediaTek MT7530 PHY] (irq=POLL)

I don't want to submit a bugfix to the net tree if the bug won't ever
happen in real life.

Arınç