On Thu, May 26, 2022 at 9:43 AM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> On Sat, 21 May 2022, Benjamin Herrenschmidt wrote:
> > On Wed, 2022-05-18 at 20:13 -0700, Jakub Kicinski wrote:
> >> Looks like almost all changes to this driver had been tree-wide
> >> refactoring since git era begun. There is one commit from Al
> >> 15 years ago which could potentially be fixing a real bug.
> >>
> >> The driver is using virt_to_bus() and is a real magnet for pointless
> >> cleanups. It seems unlikely to have real users. Let's try to shed
> >> this maintenance burden.
> >>
> >> Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
> >
> > Removing this driver will kill support for some rather old PowerMac
> > models (some PowerBooks I think, paulus would know). No objection on my
> > part, though. I doubt people still use these things with new kernels
> > but ... who knows ? :-)
>
> Aren't these PCI, and thus working fine with the PCI-only DE2104X
> (dc2104x) or TULIP (dc2114x) drivers?
>
> IIRC, I've initially used the de4x5 driver on Alpha (UDB/Multia) or PPC
> (CHRP), but switched to the TULIP driver later (that was before the
> dc2104x/dc2114x driver split, hence a loooong time ago).
The PCI device IDs say this is correct: there are four IDs in the
de4x5 driver, all of which are also listed in one of the two other
drivers.
Arnd
