tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 4ccc9e2db7ac33f450a1ff6ce158a71e5a81ded9 commit: 4f5b70eb322a2ab7efc7a60a572fa72e46c89f16 [3918/4407] hwmon: Add support for SB-RMI power module config: x86_64-buildonly-randconfig-r002-20210730 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 4f71f59bf3d9914188a11d0c41bedbb339d36ff5) 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=4f5b70eb322a2ab7efc7a60a572fa72e46c89f16 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 4f5b70eb322a2ab7efc7a60a572fa72e46c89f16 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/hwmon/sbrmi.c:211:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] case hwmon_power_cap_max: ^~~~~~~~~~~~~~~~~~~ drivers/hwmon/sbrmi.c:217:6: note: uninitialized use occurs here if (ret < 0) ^~~ drivers/hwmon/sbrmi.c:196:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated. vim +/ret +211 drivers/hwmon/sbrmi.c 190 191 static int sbrmi_read(struct device *dev, enum hwmon_sensor_types type, 192 u32 attr, int channel, long *val) 193 { 194 struct sbrmi_data *data = dev_get_drvdata(dev); 195 struct sbrmi_mailbox_msg msg = { 0 }; 196 int ret; 197 198 if (type != hwmon_power) 199 return -EINVAL; 200 201 msg.read = true; 202 switch (attr) { 203 case hwmon_power_input: 204 msg.cmd = SBRMI_READ_PKG_PWR_CONSUMPTION; 205 ret = rmi_mailbox_xfer(data, &msg); 206 break; 207 case hwmon_power_cap: 208 msg.cmd = SBRMI_READ_PKG_PWR_LIMIT; 209 ret = rmi_mailbox_xfer(data, &msg); 210 break; > 211 case hwmon_power_cap_max: 212 msg.data_out = data->pwr_limit_max; 213 break; 214 default: 215 return -EINVAL; 216 } 217 if (ret < 0) 218 return ret; 219 /* hwmon power attributes are in microWatt */ 220 *val = (long)msg.data_out * 1000; 221 return ret; 222 } 223 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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