Hi Mihail, Thank you for the patch! Yet something to improve: [auto build test ERROR on ef226dcf3d88697a06335fbc55c4263ab164b135] url: https://github.com/0day-ci/linux/commits/Mihail-Chindris/drivers-iio-dac-Add-AD3552R-driver-support/20211021-151417 base: ef226dcf3d88697a06335fbc55c4263ab164b135 config: nios2-allyesconfig (attached as .config) compiler: nios2-linux-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://github.com/0day-ci/linux/commit/6c22b3c7b44166beec8e31f25025042cc0da1ba7 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mihail-Chindris/drivers-iio-dac-Add-AD3552R-driver-support/20211021-151417 git checkout 6c22b3c7b44166beec8e31f25025042cc0da1ba7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=nios2 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/iio/dac/ad3552r.c: In function 'ad3552r_configure_device': >> drivers/iio/dac/ad3552r.c:978:14: error: variable 'is_custom' set but not used [-Werror=unused-but-set-variable] 978 | bool is_custom; | ^~~~~~~~~ cc1: all warnings being treated as errors vim +/is_custom +978 drivers/iio/dac/ad3552r.c 970 971 static int ad3552r_configure_device(struct ad3552r_desc *dac) 972 { 973 struct device *dev = &dac->spi->dev; 974 struct fwnode_handle *child; 975 struct regulator *vref; 976 int err, cnt = 0, voltage, delta = 100000; 977 u32 vals[2], val, ch; > 978 bool is_custom; 979 980 dac->gpio_ldac = devm_gpiod_get_optional(dev, "ldac", GPIOD_OUT_HIGH); 981 if (IS_ERR(dac->gpio_ldac)) 982 return dev_err_probe(dev, PTR_ERR(dac->gpio_ldac), 983 "Error getting gpio ldac"); 984 985 vref = devm_regulator_get_optional(dev, "vref"); 986 if (IS_ERR(vref)) { 987 if (PTR_ERR(vref) != -ENODEV) 988 return dev_err_probe(dev, PTR_ERR(vref), 989 "Error getting vref"); 990 vref = NULL; 991 } 992 if (vref) { 993 voltage = regulator_get_voltage(vref); 994 if (voltage > 2500000 + delta || voltage < 2500000 - delta) { 995 dev_warn(dev, "vref-supply must be 2.5V"); 996 return -EINVAL; 997 } 998 val = AD3552R_EXTERNAL_VREF_PIN_INPUT; 999 } else { 1000 if (device_property_read_bool(dev, "adi,vref-out-en")) 1001 val = AD3552R_INTERNAL_VREF_PIN_2P5V; 1002 else 1003 val = AD3552R_INTERNAL_VREF_PIN_FLOATING; 1004 } 1005 err = ad3552r_update_reg_field(dac, 1006 addr_mask_map[AD3552R_VREF_SELECT][0], 1007 addr_mask_map[AD3552R_VREF_SELECT][1], 1008 val); 1009 if (err) 1010 return err; 1011 1012 err = device_property_read_u32(dev, "adi,sdo-drive-strength", &val); 1013 if (!err) { 1014 if (val > 3) 1015 return dev_err_probe(dev, -EINVAL, 1016 "adi,sdo-drive-strength must be less than 4\n"); 1017 1018 err = ad3552r_update_reg_field(dac, 1019 addr_mask_map[AD3552R_SDO_DRIVE_STRENGTH][0], 1020 addr_mask_map[AD3552R_SDO_DRIVE_STRENGTH][1], 1021 val); 1022 if (err) 1023 return err; 1024 } 1025 1026 dac->num_ch = device_get_child_node_count(dev); 1027 if (!dac->num_ch) 1028 return dev_err_probe(dev, -ENODEV, "No channels defined\n"); 1029 1030 device_for_each_child_node(dev, child) { 1031 err = fwnode_property_read_u32(child, "reg", &ch); 1032 if (err) { 1033 dev_err_probe(dev, err, 1034 "mandatory reg property missing\n"); 1035 goto put_child; 1036 } 1037 if (ch >= AD3552R_NUM_CH) { 1038 dev_err_probe(dev, err, "reg must be less than %d\n", 1039 AD3552R_NUM_CH); 1040 err = -EINVAL; 1041 goto put_child; 1042 } 1043 1044 if (fwnode_property_present(child, "adi,output-range-microvolt")) { 1045 is_custom = false; 1046 err = fwnode_property_read_u32_array(child, 1047 "adi,output-range-microvolt", 1048 vals, 1049 2); 1050 if (err) { 1051 dev_err_probe(dev, err, 1052 "mandatory adi,output-range-microvolt property missing\n"); 1053 goto put_child; 1054 } 1055 1056 val = ad3552r_find_range(dac->chip_id, vals); 1057 if ((s32)val < 0) { 1058 err = -EINVAL; 1059 dev_err_probe(dev, err, 1060 "Invalid adi,output-range-microvolt value\n"); 1061 goto put_child; 1062 } 1063 err = ad3552r_set_ch_value(dac, 1064 AD3552R_CH_OUTPUT_RANGE_SEL, 1065 ch, val); 1066 if (err) 1067 goto put_child; 1068 1069 dac->ch_data[ch].range = val; 1070 } else { 1071 is_custom = true; 1072 err = ad3552r_configure_custom_gain(dac, child, ch); 1073 if (err) 1074 goto put_child; 1075 } 1076 1077 ad3552r_calc_gain_and_offset(dac, ch); 1078 dac->enabled_ch |= BIT(ch); 1079 1080 err = ad3552r_set_ch_value(dac, AD3552R_CH_SELECT, ch, 1); 1081 if (err < 0) 1082 return err; 1083 1084 dac->channels[cnt] = AD3552R_CH_DAC(ch); 1085 ++cnt; 1086 1087 } 1088 1089 /* Disable unused channels */ 1090 for_each_clear_bit(ch, &dac->enabled_ch, AD3552R_NUM_CH) { 1091 err = ad3552r_set_ch_value(dac, AD3552R_CH_AMPLIFIER_POWERDOWN, 1092 ch, 0); 1093 if (err) 1094 return err; 1095 } 1096 1097 dac->num_ch = cnt; 1098 1099 return 0; 1100 put_child: 1101 fwnode_handle_put(child); 1102 1103 return err; 1104 } 1105 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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