diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-09-01 11:44:35 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-11-20 01:17:22 +0000 |
| commit | 3481ab8a20bbf9f2ac1a40e28ea6b3e708ddaec8 (patch) | |
| tree | c69f2dea7f75d08f7a8440550c0e450697a4604f | |
| parent | ba0410655df097129213d743f24050958c9d714f (diff) | |
iio: accel: kxsd9: Fix scaling bug
commit 307fe9dd11ae44d4f8881ee449a7cbac36e1f5de upstream.
All the scaling of the KXSD9 involves multiplication with a
fraction number < 1.
However the scaling value returned from IIO_INFO_SCALE was
unpredictable as only the micros of the value was assigned, and
not the integer part, resulting in scaling like this:
$cat in_accel_scale
-1057462640.011978
Fix this by assigning zero to the integer part.
Tested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/iio/accel/kxsd9.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index 78c911be115d..6bf81d95a3f4 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -166,6 +166,7 @@ static int kxsd9_read_raw(struct iio_dev *indio_dev, ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C)); if (ret < 0) goto error_ret; + *val = 0; *val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK]; ret = IIO_VAL_INT_PLUS_MICRO; break; |