Hi Gary, kernel test robot noticed the following build warnings: [auto build test WARNING on staging/staging-testing] url: https://github.com/intel-lab-lkp/linux/commits/Gary-Rookard/staging-rtl8192e-renamed-variable-TxCountToDataRate/20231022-061649 base: staging/staging-testing patch link: https://lore.kernel.org/r/20231021215440.6584-1-garyrookard%40fastmail.org patch subject: [PATCH v3] staging: rtl8192e: renamed variable TxCountToDataRate config: i386-buildonly-randconfig-002-20231026 (https://download.01.org/0day-ci/archive/20231026/202310261254.JYIf89K5-lkp@xxxxxxxxx/config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231026/202310261254.JYIf89K5-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310261254.JYIf89K5-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/staging/rtl8192e/rtl819x_HTProc.c:117:6: warning: no previous declaration for 'tx_count_to_data_rate' [-Wmissing-declarations] u16 tx_count_to_data_rate(struct rtllib_device *ieee, u8 nDataRate) ^~~~~~~~~~~~~~~~~~~~~ vim +/tx_count_to_data_rate +117 drivers/staging/rtl8192e/rtl819x_HTProc.c 116 > 117 u16 tx_count_to_data_rate(struct rtllib_device *ieee, u8 nDataRate) 118 { 119 u16 CCKOFDMRate[12] = {0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 120 0x24, 0x30, 0x48, 0x60, 0x6c}; 121 u8 is40MHz = 0; 122 u8 isShortGI = 0; 123 124 if (nDataRate < 12) 125 return CCKOFDMRate[nDataRate]; 126 if (nDataRate >= 0x10 && nDataRate <= 0x1f) { 127 is40MHz = 0; 128 isShortGI = 0; 129 } else if (nDataRate >= 0x20 && nDataRate <= 0x2f) { 130 is40MHz = 1; 131 isShortGI = 0; 132 } else if (nDataRate >= 0x30 && nDataRate <= 0x3f) { 133 is40MHz = 0; 134 isShortGI = 1; 135 } else if (nDataRate >= 0x40 && nDataRate <= 0x4f) { 136 is40MHz = 1; 137 isShortGI = 1; 138 } 139 return MCS_DATA_RATE[is40MHz][isShortGI][nDataRate & 0xf]; 140 } 141 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki