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Date: Wed, 30 Sep 2026 16:01:29 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Minh =?utf-8?B?VGnhur9uIE5ndXnhu4Vu?= <zizuzacker@gmail.com>
Cc: stable@vger.kernel.org, Woojung Huh <woojung.huh@microchip.com>,
	UNGLinuxDriver@microchip.com, netdev@vger.kernel.org
Subject: Re: [PATCH 6.6.y] net: usb: lan78xx: program MAC_CR for LAN7801
 fixed-PHY link
Message-ID: <2026093022-concerned-gestate-2a88@gregkh>
References: <20260605121535.51414-1-zizuzacker@gmail.com>
 <2026060535-subpanel-proven-595a@gregkh>
 <CAH9t78zjHGm-EFmjeJy3fMZ0fs3m+ZKWynaJkd8GDZdWoZDLHw@mail.gmail.com>
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On Tue, Sep 29, 2026 at 02:36:13PM +0700, Minh Tiến Nguyễn wrote:
> > Please backport exactly what is in the mainline tree, otherwise odds are,
> > this one-off fix will be found incorrect (we always get it wrong...)
> 
> Hi Greg,
> Sorry for the long silence. In June the board was still in development
> and I only made the link work; I've only now had time to recheck this
> against mainline and test it on the hardware.
> 
> You were right. Please drop my patch; these two mainline commits fix
> the same bug:
> 
>   5160b129f65f ("lan78xx: Enable 125 MHz CLK configuration for LAN7801 if
> NO EEPROM is detected")
>   799f532de136 ("lan78xx: Enable Auto Speed and Auto Duplex configuration
> for LAN7801 if NO EEPROM is detected")
> 
> Could you apply them, in that order, to the stable trees that don't
> have them yet (6.6.y and older)? They apply cleanly. I tested them with
> the 6.6.y and 6.1.y driver on the board: without them the LAN7801 MAC
> stays at 10 Mb/s and passes no traffic, with them the link runs at
> 1000/full with no errors.
 

Now queued up, thanks.

greg k-h