On 2021/5/14 15:36, Lars-Peter Clausen wrote: > On 5/14/21 8:54 AM, YueHaibing wrote: >> Set error code while device ID query failed. >> >> Fixes: 88bc30548aae ("IIO: ADC: New driver for AD7792/AD7793 3 Channel SPI ADC") >> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx> > > Hi, > > Thanks for finding and fixing this. One small comment. > > >> --- >> drivers/iio/adc/ad7793.c | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c >> index 5e980a06258e..b4f9ac3838e1 100644 >> --- a/drivers/iio/adc/ad7793.c >> +++ b/drivers/iio/adc/ad7793.c >> @@ -279,6 +279,7 @@ static int ad7793_setup(struct iio_dev *indio_dev, >> id &= AD7793_ID_MASK; >> if (id != st->chip_info->id) { >> + ret = -EINVAL; > Usually we use ENODEV as the error code when the device ID does not match. Thanks, will send v2. >> dev_err(&st->sd.spi->dev, "device ID query failed\n"); >> goto out; >> } > > > .