tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-ne... master head: 0dc62413c882d765db7a3ff4d507e8c0a804ba68 commit: 369956ae5720ba1b415b37ba23cea5ede2942398 [19/40] rtlwifi: rtl8192de: Remove redundant variable initializations config: i386-randconfig-a015-20210822 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 9e9d70591e72fc6762b4b9a226b68ed1307419bf) 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/kvalo/wireless-drivers-ne... git remote add wireless-drivers-next https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-ne... git fetch --no-tags wireless-drivers-next master git checkout 369956ae5720ba1b415b37ba23cea5ede2942398 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): if (chnl > 14) { ^~~~~~~~~ drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c:900:9: note: uninitialized use occurs here return place; ^~~~~ drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c:892:2: note: remove the 'if' if its condition is always true if (chnl > 14) { ^~~~~~~~~~~~~~~ drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c:890:10: note: initialize the variable 'place' to silence this warning u8 place; ^ = '\0' 1 warning generated. vim +892 drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 887 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 888 static u8 _rtl92c_phy_get_rightchnlplace(u8 chnl) 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 889 { 369956ae5720ba drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c Colin Ian King 2021-08-03 890 u8 place; 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 891 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 @892 if (chnl > 14) { bb6fa826ba308e drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c Larry Finger 2016-02-11 893 for (place = 14; place < sizeof(channel5g); place++) { bb6fa826ba308e drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c Larry Finger 2016-02-11 894 if (channel5g[place] == chnl) { 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 895 place++; 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 896 break; 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 897 } 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 898 } 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 899 } 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 900 return place; 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 901 } 7274a8c229805d drivers/net/wireless/rtlwifi/rtl8192de/phy.c Chaoming Li 2011-06-10 902 :::::: The code at line 892 was first introduced by commit :::::: 7274a8c229805d5ab1228a2d7d8ed304fcfa2bc6 rtlwifi: rtl8192de: Merge phy routines :::::: TO: Chaoming Li <chaoming_li(a)realsil.com.cn&gt; :::::: CC: John W. Linville <linville(a)tuxdriver.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org