[kbuild-all] drivers/power/supply/ab8500_fg.c:2243:75: warning: variable 'b' set but not used

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: e3a8b6a1e70c37702054ae3c7c07ed828435d8ee commit: 2a5f41830aadc2d7f4145eae49381133da5df2a3 power: supply: ab8500: Standardize voltages date: 8 weeks ago config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20220118/202201181843.hXuoA1vS-lk...) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 2a5f41830aadc2d7f4145eae49381133da5df2a3 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash drivers/power/supply/ drivers/usb/gadget/udc/ 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 >>): drivers/power/supply/ab8500_fg.c: In function 'ab8500_fg_get_ext_psy_data': 2243 | const struct ab8500_battery_type *b; | ^ vim +/b +2243 drivers/power/supply/ab8500_fg.c 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2167 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2168 static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data) 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2169 { 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2170 struct power_supply *psy; ea32cea140f644 drivers/power/ab8500_fg.c Andy Shevchenko 2016-03-17 2171 struct power_supply *ext = dev_get_drvdata(dev); ea32cea140f644 drivers/power/ab8500_fg.c Andy Shevchenko 2016-03-17 2172 const char **supplicants = (const char **)ext->supplied_to; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2173 struct ab8500_fg *di; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2174 union power_supply_propval ret; ea32cea140f644 drivers/power/ab8500_fg.c Andy Shevchenko 2016-03-17 2175 int j; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2176 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2177 psy = (struct power_supply *)data; 297d716f6260cc drivers/power/ab8500_fg.c Krzysztof Kozlowski 2015-03-12 2178 di = power_supply_get_drvdata(psy); 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2179 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2180 /* 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2181 * For all psy where the name of your driver 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2182 * appears in any supplied_to 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2183 */ ea32cea140f644 drivers/power/ab8500_fg.c Andy Shevchenko 2016-03-17 2184 j = match_string(supplicants, ext->num_supplicants, psy->desc->name); ea32cea140f644 drivers/power/ab8500_fg.c Andy Shevchenko 2016-03-17 2185 if (j < 0) 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2186 return 0; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2187 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2188 /* Go through all properties for the psy */ 297d716f6260cc drivers/power/ab8500_fg.c Krzysztof Kozlowski 2015-03-12 2189 for (j = 0; j < ext->desc->num_properties; j++) { 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2190 enum power_supply_property prop; 297d716f6260cc drivers/power/ab8500_fg.c Krzysztof Kozlowski 2015-03-12 2191 prop = ext->desc->properties[j]; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2192 15077fc1f78488 drivers/power/ab8500_fg.c Krzysztof Kozlowski 2015-03-12 2193 if (power_supply_get_property(ext, prop, &ret)) 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2194 continue; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2195 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2196 switch (prop) { 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2197 case POWER_SUPPLY_PROP_STATUS: 297d716f6260cc drivers/power/ab8500_fg.c Krzysztof Kozlowski 2015-03-12 2198 switch (ext->desc->type) { 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2199 case POWER_SUPPLY_TYPE_BATTERY: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2200 switch (ret.intval) { 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2201 case POWER_SUPPLY_STATUS_UNKNOWN: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2202 case POWER_SUPPLY_STATUS_DISCHARGING: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2203 case POWER_SUPPLY_STATUS_NOT_CHARGING: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2204 if (!di->flags.charging) 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2205 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2206 di->flags.charging = false; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2207 di->flags.fully_charged = false; ea4024017831d6 drivers/power/ab8500_fg.c Marcus Cooper 2013-01-11 2208 if (di->bm->capacity_scaling) ea4024017831d6 drivers/power/ab8500_fg.c Marcus Cooper 2013-01-11 2209 ab8500_fg_update_cap_scalers(di); 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2210 queue_work(di->fg_wq, &di->fg_work); 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2211 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2212 case POWER_SUPPLY_STATUS_FULL: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2213 if (di->flags.fully_charged) 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2214 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2215 di->flags.fully_charged = true; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2216 di->flags.force_full = true; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2217 /* Save current capacity as maximum */ 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2218 di->bat_cap.max_mah = di->bat_cap.mah; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2219 queue_work(di->fg_wq, &di->fg_work); 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2220 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2221 case POWER_SUPPLY_STATUS_CHARGING: ea4024017831d6 drivers/power/ab8500_fg.c Marcus Cooper 2013-01-11 2222 if (di->flags.charging && ea4024017831d6 drivers/power/ab8500_fg.c Marcus Cooper 2013-01-11 2223 !di->flags.fully_charged) 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2224 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2225 di->flags.charging = true; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2226 di->flags.fully_charged = false; ea4024017831d6 drivers/power/ab8500_fg.c Marcus Cooper 2013-01-11 2227 if (di->bm->capacity_scaling) ea4024017831d6 drivers/power/ab8500_fg.c Marcus Cooper 2013-01-11 2228 ab8500_fg_update_cap_scalers(di); 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2229 queue_work(di->fg_wq, &di->fg_work); 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2230 break; c6ef5234efc076 drivers/power/supply/ab8500_fg.c Ma Feng 2019-12-19 2231 } b51883d47d37c3 drivers/power/supply/ab8500_fg.c Gustavo A. R. Silva 2021-07-13 2232 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2233 default: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2234 break; c6ef5234efc076 drivers/power/supply/ab8500_fg.c Ma Feng 2019-12-19 2235 } 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2236 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2237 case POWER_SUPPLY_PROP_TECHNOLOGY: 297d716f6260cc drivers/power/ab8500_fg.c Krzysztof Kozlowski 2015-03-12 2238 switch (ext->desc->type) { 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2239 case POWER_SUPPLY_TYPE_BATTERY: 1a793a10899487 drivers/power/ab8500_fg.c Rajkumar Kasirajan 2012-05-30 2240 if (!di->flags.batt_id_received && 2d3559a50ad6d2 drivers/power/supply/ab8500_fg.c Linus Walleij 2021-11-20 2241 (di->bm->bi.technology != e5dff305ab5c53 drivers/power/supply/ab8500_fg.c Linus Walleij 2021-11-20 2242 POWER_SUPPLY_TECHNOLOGY_UNKNOWN)) { 484a9cc3dcb867 drivers/power/supply/ab8500_fg.c Linus Walleij 2021-07-13 @2243 const struct ab8500_battery_type *b; c34a61b4e7a996 drivers/power/ab8500_fg.c Anton Vorontsov 2012-03-14 2244 e5dff305ab5c53 drivers/power/supply/ab8500_fg.c Linus Walleij 2021-11-20 2245 b = di->bm->bat_type; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2246 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2247 di->flags.batt_id_received = true; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2248 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2249 di->bat_cap.max_mah_design = 22be8d77c80dca drivers/power/supply/ab8500_fg.c Linus Walleij 2021-11-20 2250 di->bm->bi.charge_full_design_uah; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2251 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2252 di->bat_cap.max_mah = 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2253 di->bat_cap.max_mah_design; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2254 2a5f41830aadc2 drivers/power/supply/ab8500_fg.c Linus Walleij 2021-11-20 2255 di->vbat_nom_uv = 2a5f41830aadc2 drivers/power/supply/ab8500_fg.c Linus Walleij 2021-11-20 2256 di->bm->bi.voltage_max_design_uv; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2257 } 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2258 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2259 if (ret.intval) 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2260 di->flags.batt_unknown = false; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2261 else 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2262 di->flags.batt_unknown = true; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2263 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2264 default: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2265 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2266 } 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2267 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2268 case POWER_SUPPLY_PROP_TEMP: 297d716f6260cc drivers/power/ab8500_fg.c Krzysztof Kozlowski 2015-03-12 2269 switch (ext->desc->type) { 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2270 case POWER_SUPPLY_TYPE_BATTERY: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2271 if (di->flags.batt_id_received) 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2272 di->bat_temp = ret.intval; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2273 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2274 default: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2275 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2276 } 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2277 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2278 default: 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2279 break; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2280 } 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2281 } 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2282 return 0; 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2283 } 13151631b5bd06 drivers/power/ab8500_fg.c Arun Murthy 2012-02-29 2284 :::::: The code at line 2243 was first introduced by commit :::::: 484a9cc3dcb867813fca62f6443c1e77a1ae3c27 power: supply: ab8500: Drop abx500 concept :::::: TO: Linus Walleij <linus.walleij(a)linaro.org&gt; :::::: CC: Sebastian Reichel <sebastian.reichel(a)collabora.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org