Hi, Static analysis with Coverity Scan has detected a potential assignment bug in ad5380.c: 217 case IIO_CHAN_INFO_CALIBBIAS: 218 ret = regmap_read(st->regmap, AD5380_REG_OFFSET(chan->address), 219 val); 220 if (ret) 221 return ret; 222 *val >>= chan->scan_type.shift; CID 43178 (#1 of 1): Unused value (UNUSED_VALUE)assigned_pointer: Assigning value from val - (1 << chan->scan_type.realbits) / 2 to val here, but that stored value is not used. 223 val -= (1 << chan->scan_type.realbits) / 2; 224 return IIO_VAL_INT; val is a pointer and so updating it before a return is probably not the intention. I suspect the intention was probably: *val -= (1 << chan->scan_type.realbits) / 2; However, I'm not confident about this as the following case has: 225 case IIO_CHAN_INFO_SCALE: 226 *val = 2 * st->vref; 227 *val2 = chan->scan_type.realbits; 228 return IIO_VAL_FRACTIONAL_LOG2; which may imply the update maybe to *val2 instead, e.g.: *val2 -= (1 << chan->scan_type.realbits) / 2; Any ideas? Colin
