Hi Antoni, kernel test robot noticed the following build warnings: [auto build test WARNING on jic23-iio/togreg] [also build test WARNING on linus/master v6.13-rc6 next-20250110] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Antoni-Pokusinski/dt-bindings-iio-magnetometer-add-binding-for-Si7210/20250109-074641 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg patch link: https://lore.kernel.org/r/20250108234411.882768-3-apokusinski01%40gmail.com patch subject: [PATCH v2 2/2] iio: magnetometer: si7210: add driver for Si7210 config: openrisc-randconfig-r123-20250110 (https://download.01.org/0day-ci/archive/20250110/202501101656.F268NchW-lkp@xxxxxxxxx/config) compiler: or1k-linux-gcc (GCC) 14.2.0 reproduce: (https://download.01.org/0day-ci/archive/20250110/202501101656.F268NchW-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202501101656.F268NchW-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/iio/magnetometer/si7210.c:169:16: sparse: sparse: cast from restricted __be16 >> drivers/iio/magnetometer/si7210.c:189:24: sparse: sparse: restricted __be16 degrades to integer >> drivers/iio/magnetometer/si7210.c:206:23: sparse: sparse: cast to restricted __be16 drivers/iio/magnetometer/si7210.c:206:23: sparse: sparse: restricted __be16 degrades to integer drivers/iio/magnetometer/si7210.c:206:23: sparse: sparse: restricted __be16 degrades to integer vim +169 drivers/iio/magnetometer/si7210.c 143 144 static int si7210_fetch_measurement(struct si7210_data *data, 145 struct iio_chan_spec const *chan, 146 __be16 *buf) 147 { 148 u8 dspsigsel = chan->type == IIO_MAGN ? 0 : 1; 149 int ret; 150 151 guard(mutex)(&data->fetch_lock); 152 153 ret = regmap_update_bits(data->regmap, SI7210_REG_DSPSIGSEL, 154 SI7210_MASK_DSPSIGSEL, dspsigsel); 155 if (ret < 0) 156 return ret; 157 158 ret = regmap_update_bits(data->regmap, SI7210_REG_POWER_CTRL, 159 SI7210_MASK_ONEBURST | SI7210_MASK_STOP, 160 SI7210_MASK_ONEBURST & ~SI7210_MASK_STOP); 161 if (ret < 0) 162 return ret; 163 164 /* Read the contents of the registers containing the result: DSPSIGM, DSPSIGL */ 165 ret = regmap_bulk_read(data->regmap, SI7210_REG_DSPSIGM, buf, 2); 166 if (ret < 0) 167 return ret; 168 > 169 *buf = cpu_to_be16(*buf); 170 171 return 0; 172 } 173 174 static int si7210_read_raw(struct iio_dev *indio_dev, 175 struct iio_chan_spec const *chan, 176 int *val, int *val2, long mask) 177 { 178 struct si7210_data *data = iio_priv(indio_dev); 179 long long tmp; 180 __be16 dspsig; 181 int ret; 182 183 switch (mask) { 184 case IIO_CHAN_INFO_RAW: 185 ret = si7210_fetch_measurement(data, chan, &dspsig); 186 if (ret < 0) 187 return ret; 188 > 189 *val = dspsig & GENMASK(14, 0); 190 return IIO_VAL_INT; 191 case IIO_CHAN_INFO_SCALE: 192 *val = 0; 193 if (data->curr_scale == 20) 194 *val2 = 1250; 195 else /* data->curr_scale == 200 */ 196 *val2 = 12500; 197 return IIO_VAL_INT_PLUS_MICRO; 198 case IIO_CHAN_INFO_OFFSET: 199 *val = -16384; 200 return IIO_VAL_INT; 201 case IIO_CHAN_INFO_PROCESSED: 202 ret = si7210_fetch_measurement(data, chan, &dspsig); 203 if (ret < 0) 204 return ret; 205 > 206 tmp = FIELD_GET(GENMASK(14, 3), dspsig); 207 tmp = (div_s64(-383 * tmp * tmp, 100) + (160940 * tmp - 279800000)); 208 tmp = (1 + (data->temp_gain >> 11)) * tmp + 62500 * data->temp_offset; 209 210 ret = regulator_get_voltage(data->vdd); 211 if (ret < 0) 212 return ret; 213 214 tmp -= 222 * div_s64(ret, 1000); 215 216 *val = div_s64(tmp, 1000); 217 218 return IIO_VAL_INT; 219 default: 220 return -EINVAL; 221 } 222 } 223 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
