Hi Krzysztof,
On Sat, Mar 9, 2024 at 2:30 PM Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxx> wrote:
> On 09/03/2024 13:32, Biju Das wrote:
> >> -----Original Message-----
> >> From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> >>>> This looks like ABI break and commit msg is quite vague about it.
> >>>
> >>> OK, Will update the commit message as driver is taking care of the
> >>> backward compatibility.
> >>
> >> Ah, I was not precise here, you should consider the impact this is on DTB used on other kernels. You
> >> guys should really stop using imprecise/incorrect generic fallbacks and, since it is usually tricky to
> >> know which fallback is correct or not, you should stop using them at all.
> >
> > There will be driver change to handle SoC specific compatible.
> >
> > So ,
> >
> > old DTB + old kernel will have 16 pipe buffers
> > old DTB + newer kernel will have 9 pipe buffers.
> > New DTB + new kernel will have 9 pipe buffer.
>
> You missed new DTB and old kernel. This breaks all users of DTS. That's
> the entire point of your broken generic compatibles which you did not
> address.
Doesn't DT guarantee only forward compatibility?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
