diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-09-01 11:44:35 +0200 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-10-05 22:40:20 -0400 |
| commit | a2b268541d262c70ec53328415730da80fcd10de (patch) | |
| tree | 28009179ccfc128eb4a56a7b18c020d399a62239 /drivers | |
| parent | 7107bc8e091a3bafb6a4c8697847ae894919f730 (diff) | |
iio: accel: kxsd9: Fix scaling bug
[ Upstream commit 307fe9dd11ae44d4f8881ee449a7cbac36e1f5de ]
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.
Cc: stable@vger.kernel.org
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: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'drivers')
| -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 6dfce7e722cb..2254f8509a69 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) goto error_ret; + *val = 0; *val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK]; ret = IIO_VAL_INT_PLUS_MICRO; break; |