On 01/09/2013 02:01 PM, Lars-Peter Clausen wrote: > The adis16080 reports sample values in twos complement. So we need to perform a > sign extension on the result, otherwise negative values will be reported > incorrectly as large positive values. > > Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx> Added to fixes-togreg branch of iio.git > > --- > This one should go into 3.8 if possible, the rest of the series is for 3.9 > --- > drivers/staging/iio/gyro/adis16080_core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/staging/iio/gyro/adis16080_core.c b/drivers/staging/iio/gyro/adis16080_core.c > index 3525a68..149ff99 100644 > --- a/drivers/staging/iio/gyro/adis16080_core.c > +++ b/drivers/staging/iio/gyro/adis16080_core.c > @@ -69,7 +69,7 @@ static int adis16080_spi_read(struct iio_dev *indio_dev, > ret = spi_read(st->us, st->buf, 2); > > if (ret == 0) > - *val = ((st->buf[0] & 0xF) << 8) | st->buf[1]; > + *val = sign_extend32(12, ((st->buf[0] & 0xF) << 8) | st->buf[1]); > mutex_unlock(&st->buf_lock); > > return ret; > -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
