Hi Jonathan, On 23.12.2019 18:16, Jonathan Cameron wrote: > > As below. Why change the existing return value? > >> + } >> + return ret; >> + } >> + case IIO_CHAN_INFO_PEAK: { >> + int ret; >> + >> + ret = iio_device_claim_direct_mode(indio_dev); >> + if (ret) >> + return ret; >> + mutex_lock(&data->lock); >> + ret = hdc2010_get_measurement_byte(data, chan); >> + mutex_unlock(&data->lock); >> + iio_device_release_direct_mode(indio_dev); >> + if (ret >= 0) { >> + /* Scaling up the value so we can use same offset as RAW */ >> + *val = ret * 256; >> + ret = IIO_VAL_INT; >> + } else > Why overwrite ret? That might provide better information > on what went wrong. As with the other stylistic notes before, no good reason other than how it was handled in other drivers in the tree. So I assumed it was the practice. Will tidy up later this week I hope and send a new patchset. -- Eugene