linux-kernel - Re: Linux 5.19-rc6

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Date:   Thu, 14 Jul 2022 06:20:35 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     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

On 7/14/22 00:23, Geert Uytterhoeven wrote:
> Hi Linus,
> 
> 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

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 ?

Thanks,
Guenter