From: Guenter Roeck <linux@roeck-us.net>
To: Masahiro Yamada <masahiroy@kernel.org>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
"Jason A . Donenfeld" <Jason@zx2c4.com>,
Nathan Chancellor <natechancellor@gmail.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Shuah Khan <shuah@kernel.org>,
clang-built-linux@googlegroups.com, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org, netdev@vger.kernel.org,
wireguard@lists.zx2c4.com
Subject: Re: [PATCH v3] Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK
Date: Sat, 12 Dec 2020 08:18:31 -0800 [thread overview]
Message-ID: <20201212161831.GA28098@roeck-us.net> (raw)
In-Reply-To: <20201128193335.219395-1-masahiroy@kernel.org>
On Sun, Nov 29, 2020 at 04:33:35AM +0900, Masahiro Yamada wrote:
> Revert commit cebc04ba9aeb ("add CONFIG_ENABLE_MUST_CHECK").
>
> A lot of warn_unused_result warnings existed in 2006, but until now
> they have been fixed thanks to people doing allmodconfig tests.
>
> Our goal is to always enable __must_check where appropriate, so this
> CONFIG option is no longer needed.
>
> I see a lot of defconfig (arch/*/configs/*_defconfig) files having:
>
> # CONFIG_ENABLE_MUST_CHECK is not set
>
> I did not touch them for now since it would be a big churn. If arch
> maintainers want to clean them up, please go ahead.
>
> While I was here, I also moved __must_check to compiler_attributes.h
> from compiler_types.h
>
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
> Acked-by: Jason A. Donenfeld <Jason@zx2c4.com>
> Acked-by: Nathan Chancellor <natechancellor@gmail.com>
> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
This patch results in:
arch/sh/kernel/cpu/sh4a/smp-shx3.c: In function 'shx3_prepare_cpus':
arch/sh/kernel/cpu/sh4a/smp-shx3.c:76:3: error: ignoring return value of 'request_irq' declared with attribute 'warn_unused_result'
when building sh:defconfig. Checking for calls to request_irq()
suggests that there will be other similar errors in various builds.
Reverting the patch fixes the problem.
Guenter
next prev parent reply other threads:[~2020-12-12 16:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-28 19:33 [PATCH v3] Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK Masahiro Yamada
2020-11-30 1:04 ` Nathan Chancellor
2020-11-30 18:16 ` Nick Desaulniers
2020-12-02 12:50 ` Miguel Ojeda
2020-12-12 16:18 ` Guenter Roeck [this message]
2020-12-13 5:04 ` Miguel Ojeda
2020-12-13 12:55 ` Guenter Roeck
2020-12-13 14:58 ` Miguel Ojeda
2020-12-13 15:16 ` Greg KH
2020-12-13 15:27 ` Miguel Ojeda
2020-12-21 6:18 ` Masahiro Yamada
2020-12-21 10:02 ` Guenter Roeck
2020-12-21 13:51 ` Miguel Ojeda
2020-12-21 13:51 ` Miguel Ojeda
2020-12-13 15:37 ` Matthias Urlichs
2020-12-13 16:32 ` Miguel Ojeda
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