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From:   Kalle Valo <kvalo@kernel.org>
To:     kernel test robot <lkp@intel.com>
Cc:     Bitterblue Smith <rtl8821cerfe2@gmail.com>, llvm@lists.linux.dev,
        kbuild-all@lists.01.org,
        Linux Memory Management List <linux-mm@kvack.org>,
        linux-wireless@vger.kernel.org
Subject: Re: [linux-next:master 637/2652] drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188f.c:432:7: warning: variable 'hw_ctrl_s1' is used uninitialized whenever 'if' condition is false
References: <202210211531.zEaM6hBM-lkp@intel.com>
Date:   Fri, 21 Oct 2022 11:20:10 +0300
In-Reply-To: <202210211531.zEaM6hBM-lkp@intel.com> (kernel test robot's
        message of "Fri, 21 Oct 2022 15:43:30 +0800")
Message-ID: <87edv1lhad.fsf@kernel.org>
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+ linux-wireless

kernel test robot <lkp@intel.com> writes:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   4d48f589d294ddc5e01d3b0dc7cecc55324c05ca
> commit: c888183b21f36a247bb166ca9365705611bea847 [637/2652] wifi: rtl8xxxu: Support new chip RTL8188FU
> config: i386-allyesconfig
> compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=c888183b21f36a247bb166ca9365705611bea847
>         git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>         git fetch --no-tags linux-next master
>         git checkout c888183b21f36a247bb166ca9365705611bea847
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/ drivers/net/wireless/ath/ath11k/ drivers/net/wireless/realtek/rtl8xxxu/
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
>>> drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188f.c:432:7: warning: variable 'hw_ctrl_s1' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
>                    if (hw_ctrl) {
>                        ^~~~~~~
>    drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188f.c:440:7: note: uninitialized use occurs here
>                    if (hw_ctrl_s1 || sw_ctrl_s1) {
>                        ^~~~~~~~~~
>    drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188f.c:432:3: note: remove the 'if' if its condition is always true
>                    if (hw_ctrl) {
>                    ^~~~~~~~~~~~~
>    drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188f.c:415:45: note: initialize the variable 'hw_ctrl_s1' to silence this warning
>            bool do_notch, hw_ctrl, sw_ctrl, hw_ctrl_s1, sw_ctrl_s1;
>                                                       ^
>                                                        = 0
>    1 warning generated.

Bitterblue, could you submit a patch to fix this, please?

-- 
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