Hi Bartosz, I love your patch! Yet something to improve: [auto build test ERROR on iio/togreg] [also build test ERROR on staging/staging-testing v5.8-rc3 next-20200702] [cannot apply to xlnx/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Bartosz-Golaszewski/iio-adc-xilinx-xadc-use-devm_krealloc/20200703-002747 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: i386-randconfig-s002-20200702 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-3-gfa153962-dirty # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): drivers/iio/adc/xilinx-xadc-core.c: In function 'xadc_parse_dt': >> drivers/iio/adc/xilinx-xadc-core.c:1179:24: error: implicit declaration of function 'devm_krealloc'; did you mean 'devm_kcalloc'? [-Werror=implicit-function-declaration] 1179 | indio_dev->channels = devm_krealloc(dev, channels, | ^~~~~~~~~~~~~ | devm_kcalloc >> drivers/iio/adc/xilinx-xadc-core.c:1179:22: warning: assignment to 'const struct iio_chan_spec *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1179 | indio_dev->channels = devm_krealloc(dev, channels, | ^ cc1: some warnings being treated as errors vim +1179 drivers/iio/adc/xilinx-xadc-core.c 1093 1094 static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np, 1095 unsigned int *conf) 1096 { 1097 struct device *dev = indio_dev->dev.parent; 1098 struct xadc *xadc = iio_priv(indio_dev); 1099 struct iio_chan_spec *channels, *chan; 1100 struct device_node *chan_node, *child; 1101 unsigned int num_channels; 1102 const char *external_mux; 1103 u32 ext_mux_chan; 1104 u32 reg; 1105 int ret; 1106 1107 *conf = 0; 1108 1109 ret = of_property_read_string(np, "xlnx,external-mux", &external_mux); 1110 if (ret < 0 || strcasecmp(external_mux, "none") == 0) 1111 xadc->external_mux_mode = XADC_EXTERNAL_MUX_NONE; 1112 else if (strcasecmp(external_mux, "single") == 0) 1113 xadc->external_mux_mode = XADC_EXTERNAL_MUX_SINGLE; 1114 else if (strcasecmp(external_mux, "dual") == 0) 1115 xadc->external_mux_mode = XADC_EXTERNAL_MUX_DUAL; 1116 else 1117 return -EINVAL; 1118 1119 if (xadc->external_mux_mode != XADC_EXTERNAL_MUX_NONE) { 1120 ret = of_property_read_u32(np, "xlnx,external-mux-channel", 1121 &ext_mux_chan); 1122 if (ret < 0) 1123 return ret; 1124 1125 if (xadc->external_mux_mode == XADC_EXTERNAL_MUX_SINGLE) { 1126 if (ext_mux_chan == 0) 1127 ext_mux_chan = XADC_REG_VPVN; 1128 else if (ext_mux_chan <= 16) 1129 ext_mux_chan = XADC_REG_VAUX(ext_mux_chan - 1); 1130 else 1131 return -EINVAL; 1132 } else { 1133 if (ext_mux_chan > 0 && ext_mux_chan <= 8) 1134 ext_mux_chan = XADC_REG_VAUX(ext_mux_chan - 1); 1135 else 1136 return -EINVAL; 1137 } 1138 1139 *conf |= XADC_CONF0_MUX | XADC_CONF0_CHAN(ext_mux_chan); 1140 } 1141 1142 channels = devm_kmemdup(dev, xadc_channels, 1143 sizeof(xadc_channels), GFP_KERNEL); 1144 if (!channels) 1145 return -ENOMEM; 1146 1147 num_channels = 9; 1148 chan = &channels[9]; 1149 1150 chan_node = of_get_child_by_name(np, "xlnx,channels"); 1151 if (chan_node) { 1152 for_each_child_of_node(chan_node, child) { 1153 if (num_channels >= ARRAY_SIZE(xadc_channels)) { 1154 of_node_put(child); 1155 break; 1156 } 1157 1158 ret = of_property_read_u32(child, "reg", ®); 1159 if (ret || reg > 16) 1160 continue; 1161 1162 if (of_property_read_bool(child, "xlnx,bipolar")) 1163 chan->scan_type.sign = 's'; 1164 1165 if (reg == 0) { 1166 chan->scan_index = 11; 1167 chan->address = XADC_REG_VPVN; 1168 } else { 1169 chan->scan_index = 15 + reg; 1170 chan->address = XADC_REG_VAUX(reg - 1); 1171 } 1172 num_channels++; 1173 chan++; 1174 } 1175 } 1176 of_node_put(chan_node); 1177 1178 indio_dev->num_channels = num_channels; > 1179 indio_dev->channels = devm_krealloc(dev, channels, 1180 sizeof(*channels) * num_channels, 1181 GFP_KERNEL); 1182 /* If we can't resize the channels array, just use the original */ 1183 if (!indio_dev->channels) 1184 indio_dev->channels = channels; 1185 1186 return 0; 1187 } 1188 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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