linux-kernel - Re: [PATCH v2] ASoC: codes: src4xxx: Avoid clang -Wsometimes-uninitialized in src4xxx_hw

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Date:   Wed, 24 Aug 2022 12:12:28 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Nathan Chancellor <nathan@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Matt Flax <flatmax@...tmax.com>
Cc:     patches@...ts.linux.dev, alsa-devel@...a-project.org,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        llvm@...ts.linux.dev, kernel test robot <lkp@...el.com>,
        "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@...il.com>,
        linux-kernel@...r.kernel.org, Tom Rix <trix@...hat.com>
Subject: Re: [PATCH v2] ASoC: codes: src4xxx: Avoid clang -Wsometimes-uninitialized in src4xxx_hw_params()

On Tue, 23 Aug 2022 08:19:40 -0700, Nathan Chancellor wrote:
> Clang warns:
> 
>   sound/soc/codecs/src4xxx.c:280:3: error: variable 'd' is used uninitialized whenever switch default is taken [-Werror,-Wsometimes-uninitialized]
>                   default:
>                   ^~~~~~~
>   sound/soc/codecs/src4xxx.c:298:59: note: uninitialized use occurs here
>                   ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_11, d);
>                                                                           ^
>   sound/soc/codecs/src4xxx.c:223:20: note: initialize the variable 'd' to silence this warning
>           int val, pj, jd, d;
>                             ^
>                             = 0
>   sound/soc/codecs/src4xxx.c:280:3: error: variable 'jd' is used uninitialized whenever switch default is taken [-Werror,-Wsometimes-uninitialized]
>                   default:
>                   ^~~~~~~
>   sound/soc/codecs/src4xxx.c:293:59: note: uninitialized use occurs here
>                   ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_10, jd);
>                                                                           ^~
>   sound/soc/codecs/src4xxx.c:223:17: note: initialize the variable 'jd' to silence this warning
>           int val, pj, jd, d;
>                         ^
>                           = 0
>   sound/soc/codecs/src4xxx.c:280:3: error: variable 'pj' is used uninitialized whenever switch default is taken [-Werror,-Wsometimes-uninitialized]
>                   default:
>                   ^~~~~~~
>   sound/soc/codecs/src4xxx.c:288:59: note: uninitialized use occurs here
>                   ret = regmap_write(src4xxx->regmap, SRC4XXX_RCV_PLL_0F, pj);
>                                                                           ^~
>   sound/soc/codecs/src4xxx.c:223:13: note: initialize the variable 'pj' to silence this warning
>           int val, pj, jd, d;
>                     ^
>                       = 0
>   3 errors generated.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: codes: src4xxx: Avoid clang -Wsometimes-uninitialized in src4xxx_hw_params()
      commit: 7d3ac70d82080f7a934402d66c5238e1d99be412

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark