Re: [PATCH] hw: ppc: sam460ex: Disable Ethernet devicetree nodes

[Peter Maydell]

On Mon, 16 Aug 2021 at 15:11, Guenter Roeck <linux@roeck-us.net> wrote:
>
> On 8/16/21 7:03 AM, Peter Maydell wrote:
> > On Mon, 16 Aug 2021 at 15:00, Guenter Roeck <linux@roeck-us.net> wrote:
> >> The controllers are instantiated (it looks like the Linux driver doesn't
> >> really check during probe if the hardware is present but relies on DT),
> >> but when trying to access them there is a PHY error. If a different 
> >> Ethernet
> >> device is explicitly specified and instantiated, it either ends up as eth2
> >> or as eth0, depending on the driver load order. That makes it difficult
> >> to test those other Ethernet devices (and with it the PCI controller).
> >
> > I thought that code wasn't supposed to rely on the naming/ordering of
> > ethX anyway these days?
> >
>
> Depends on what you call "that code".

Sentence should be parsed 'I thought that (code wasn't supposed...)'.
That is, my understanding was that the kernel simply doesn't provide
the ordering/naming guarantee that your test code seems to want.

-- PMM