From: Viresh Kumar <viresh.kumar@linaro.org>
To: Nathan Chancellor <natechancellor@gmail.com>
Cc: linux-samsung-soc@vger.kernel.org, linux-pm@vger.kernel.org,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
linux-kernel@vger.kernel.org,
Krzysztof Kozlowski <krzk@kernel.org>,
clang-built-linux@googlegroups.com, Kukjin Kim <kgene@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] cpufreq: s3c64xx: Remove pointless NULL check in s3c64xx_cpufreq_driver_init
Date: Thu, 24 Oct 2019 08:43:39 +0530 [thread overview]
Message-ID: <20191024031339.qaoh3p5efmaawslq@vireshk-i7> (raw)
In-Reply-To: <20191023000906.14374-1-natechancellor@gmail.com>
On 22-10-19, 17:09, Nathan Chancellor wrote:
> When building with Clang + -Wtautological-pointer-compare:
>
> drivers/cpufreq/s3c64xx-cpufreq.c:152:6: warning: comparison of array
> 's3c64xx_freq_table' equal to a null pointer is always false
> [-Wtautological-pointer-compare]
> if (s3c64xx_freq_table == NULL) {
> ^~~~~~~~~~~~~~~~~~ ~~~~
> 1 warning generated.
>
> The definition of s3c64xx_freq_table is surrounded by an ifdef
> directive for CONFIG_CPU_S3C6410, which is always true for this driver
> because it depends on it in drivers/cpufreq/Kconfig.arm (and if it
> weren't, there would be a build error because s3c64xx_freq_table would
> not be a defined symbol).
>
> Resolve this warning by removing the unnecessary NULL check because it
> is always false as Clang notes. While we are at it, remove the
> unnecessary ifdef conditional because it is always true.
>
> Fixes: b3748ddd8056 ("[ARM] S3C64XX: Initial support for DVFS")
> Link: https://github.com/ClangBuiltLinux/linux/issues/748
> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
> ---
> drivers/cpufreq/s3c64xx-cpufreq.c | 7 -------
> 1 file changed, 7 deletions(-)
Applied. Thanks.
--
viresh
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prev parent reply other threads:[~2019-10-24 3:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-23 0:09 [PATCH] cpufreq: s3c64xx: Remove pointless NULL check in s3c64xx_cpufreq_driver_init Nathan Chancellor
2019-10-23 3:23 ` Viresh Kumar
2019-10-23 10:43 ` Mark Brown
2019-10-23 16:26 ` Nathan Chancellor
2019-10-23 16:36 ` Mark Brown
2019-10-23 16:54 ` Nathan Chancellor
2019-10-23 16:59 ` Mark Brown
2019-10-23 17:03 ` Nathan Chancellor
2019-10-24 3:13 ` Viresh Kumar [this message]
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