CC: [email protected] BCC: [email protected] CC: [email protected] TO: Krzysztof Kozlowski <[email protected]>
tree: https://github.com/krzk/linux n/qcom-ufs-opp-v2 head: bf7d30c9329c87f06dff42b303a9bcfd2e1f54eb commit: be46c855d54f763bfb95424e5204fe7496e2ee5f [14/16] PM: opp: allow control of multiple clocks :::::: branch date: 3 days ago :::::: commit date: 3 days ago config: i386-randconfig-m021 (https://download.01.org/0day-ci/archive/20220415/[email protected]/config) compiler: gcc-11 (Debian 11.2.0-19) 11.2.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> New smatch warnings: drivers/opp/core.c:1215 dev_pm_opp_set_rate() error: uninitialized symbol 'ret'. Old smatch warnings: drivers/opp/core.c:1197 dev_pm_opp_set_rate() warn: passing a valid pointer to 'PTR_ERR' drivers/opp/core.c:2813 _opp_set_availability() warn: passing a valid pointer to 'PTR_ERR' drivers/opp/core.c:2884 dev_pm_opp_adjust_voltage() warn: passing a valid pointer to 'PTR_ERR' vim +/ret +1215 drivers/opp/core.c 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1143 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1144 /** 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1145 * dev_pm_opp_set_rate() - Configure new OPP based on frequency 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1146 * @dev: device for which we do this operation 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1147 * @target_freq: frequency to achieve 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1148 * 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1149 * This configures the power-supplies to the levels specified by the OPP 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1150 * corresponding to the target_freq, and programs the clock to a value <= 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1151 * target_freq, as rounded by clk_round_rate(). Device wanting to run at fmax 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1152 * provided by the opp, should have already rounded to the target OPP's 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1153 * frequency. 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1154 */ 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1155 int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1156 { 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1157 struct opp_table *opp_table; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1158 unsigned long freq = 0, temp_freq; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1159 struct dev_pm_opp *opp = NULL; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1160 int ret; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1161 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1162 opp_table = _find_opp_table(dev); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1163 if (IS_ERR(opp_table)) { 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1164 dev_err(dev, "%s: device's opp table doesn't exist\n", __func__); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1165 return PTR_ERR(opp_table); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1166 } 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1167 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1168 if (target_freq) { 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1169 /* 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1170 * For IO devices which require an OPP on some platforms/SoCs 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1171 * while just needing to scale the clock on some others 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1172 * we look for empty OPP tables with just a clock handle and 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1173 * scale only the clk. This makes dev_pm_opp_set_rate() 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1174 * equivalent to a clk_set_rate() 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1175 */ 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1176 if (!_get_opp_count(opp_table)) { be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1177 if (opp_table->clks) be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1178 ret = _generic_set_opp_clk_only(dev, be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1179 opp_table->clks[0], be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1180 target_freq); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1181 goto put_opp_table; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1182 } 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1183 be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1184 if (opp_table->clks) be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1185 freq = clk_round_rate(opp_table->clks[0], target_freq); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1186 if ((long)freq <= 0) 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1187 freq = target_freq; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1188 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1189 /* 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1190 * The clock driver may support finer resolution of the 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1191 * frequencies than the OPP table, don't update the frequency we 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1192 * pass to clk_set_rate() here. 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1193 */ 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1194 temp_freq = freq; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1195 opp = _find_freq_ceil(opp_table, &temp_freq); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1196 if (IS_ERR(opp)) { 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1197 ret = PTR_ERR(opp); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1198 dev_err(dev, "%s: failed to find OPP for freq %lu (%d)\n", 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1199 __func__, freq, ret); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1200 goto put_opp_table; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1201 } be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1202 /* be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1203 * opp->rates are used for scaling clocks, so be sure accurate be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1204 * 'freq' is used, instead what was defined via e.g. Devicetree. be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1205 */ be46c855d54f76 drivers/opp/core.c Krzysztof Kozlowski 2022-04-05 1206 opp->rates[0] = freq; 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1207 } 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1208 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1209 ret = _set_opp(dev, opp_table, opp, freq); 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1210 386ba854d9f316 drivers/opp/core.c Viresh Kumar 2021-01-21 1211 if (target_freq) 8a31d9d94297b1 drivers/base/power/opp/core.c Viresh Kumar 2017-01-23 1212 dev_pm_opp_put(opp); 052c6f19141dd1 drivers/base/power/opp/core.c Viresh Kumar 2017-01-23 1213 put_opp_table: 5b650b388844f2 drivers/base/power/opp/core.c Viresh Kumar 2017-01-23 1214 dev_pm_opp_put_opp_table(opp_table); 052c6f19141dd1 drivers/base/power/opp/core.c Viresh Kumar 2017-01-23 @1215 return ret; 6a0712f6f199e7 drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1216 } 6a0712f6f199e7 drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1217 EXPORT_SYMBOL_GPL(dev_pm_opp_set_rate); 6a0712f6f199e7 drivers/base/power/opp/core.c Viresh Kumar 2016-02-09 1218 :::::: The code at line 1215 was first introduced by commit :::::: 052c6f19141dd13f266cc465fde6f38ddc93d5fb PM / OPP: Move away from RCU locking :::::: TO: Viresh Kumar <[email protected]> :::::: CC: Rafael J. Wysocki <[email protected]> -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
