Re: New 'make dtbs_check W=1' warnings

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On 08/04/2021 17:08, Arnd Bergmann wrote:
> Greetings to all Arm platform maintainers,
> 
> I've just gone through the DT merges I've received so far and, with a
> little help from Rob,
> managed to run 'make dtbs_check W=1' before and after, to see what
> warnings we get.
> The good news is that the number of warnings is going down, but
> unfortunately there
> is still an unmanageable amount of remaining warnings, and some new
> ones crept in.
> 
> I'm still working on my tooling for this, to catch these better, but
> ideally I think we should
> try to not introduce new warnings. I think some platforms are already
> clean, and I did
> not see any new warnings for mvebu, samsung and broadcom. There were a lot of
> warnings from .dtsi files, and I probably did an incomplete job at
> deduplicating those.
> 
> See below for the other platforms, and the new warnings that I found.
> If these are
> valid, please send a fixup before the merge window, and let me know if
> you have ideas
> for how we should handle these in the future.
> 
> For this merge window, I don't think any of them are show-stoppers (Rob, let me
> know if you disagree), but in the long run we may want to gradually enforce
> a rule about not merging changes that introduce any new warnings, in order to
> have a chance of cleaning up the existing ones.

+1 for such rule, although the best would be to get a report about new
warnings on posted patches or shortly after applying, e.g. via 0-day
kbuild robot.

Best regards,
Krzysztof



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