Commit 4813b8bd authored by Linus Walleij's avatar Linus Walleij Committed by Willy Tarreau

iio: accel: kxsd9: Fix scaling bug

commit 307fe9dd 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: default avatarJonathan Cameron <jic23@kernel.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
parent 0f9dcb7b
......@@ -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;
......
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