linux-kernel - Re: Linux 5.19-rc6

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Date:   Thu, 14 Jul 2022 15:56:45 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Alex Deucher <alexdeucher@...il.com>,
        Harry Wentland <harry.wentland@....com>,
        Leo Li <sunpeng.li@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Balbir Singh <bsingharora@...il.com>,
        Daniel Axtens <dja@...ens.net>,
        Paul Mackerras <paulus@...abs.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>
Subject: Re: Linux 5.19-rc6

Hi Günter,

On Thu, Jul 14, 2022 at 3:20 PM Guenter Roeck <linux@...ck-us.net> wrote:
> On 7/14/22 00:23, Geert Uytterhoeven wrote:
> > On Wed, Jul 13, 2022 at 11:51 PM Linus Torvalds
> > <torvalds@...ux-foundation.org> wrote:
> >> On Wed, Jul 13, 2022 at 2:01 PM Alex Deucher <alexdeucher@...il.com> wrote:
> >>> If you want to apply Guenter's patch original patch:
> >>> https://patchwork.freedesktop.org/patch/490184/
> >>> That's fine with me.
> >>
> >> Honestly, by this time I feel that it's too little, too late.
> >
> > [...]
> >
> >> So considering that the ppc people ignored this whole issue since the
> >> merge window, I think it's entirely unreasonable to then apply a
> >> ppc-specific patch for this at this time, when people literally asked
> >> "why is this needed", and there was no reply from the powerpc side.
> >
> > Oh, it's not just this one. The lists of build regressions between v5.18
> > and v5.19-rc1 [1] resp. v5.19-rc6 [2] look surprisingly similar :-(
> >
> > [1] https://lore.kernel.org/all/20220606082201.2792145-1-geert@linux-m68k.org
> > [2] https://lore.kernel.org/all/20220711064425.3084093-1-geert@linux-m68k.org
> >
>
> How do you build your images ? I don't see many of the problems you report,
> even if I build the files with W=1. It is odd, since reports such as

I rely on the kisskb build service, and just parse their build logs.

> drivers/mfd/asic3.c:941:23: error: unused variable 'asic'
>
> are real, but I just don't see that. If I build that file, I see that
> it builds with -Wno-unused-but-set-variable, due to
>
> Makefile:KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
>
> The override in scripts/Makefile.extrawarn doesn't seem to work even though
> it adds "-Wunused-but-set-variable" to the compile flags. And if I remove
> "-Wno-unused-but-set-variable" from Makefile I still don't get the error/warning.
> Confused. I must be missing something, but what ?

That particular error is seen in the sh4-gcc11/sh-allmodconfig
build[3].  I assume it is fixed by now (see commit d684e0a52d36f893
("sh: convert nommu io{re,un}map() to static inline functions")).

[3] http://kisskb.ellerman.id.au/kisskb/buildresult/14767627/

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

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