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iio: mma7455: Use scan_type when processing raw data

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Use channel definition as root of trust and replace constant
when reading elements directly using the raw sysfs attributes.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Link: https://lore.kernel.org/r/20211104082413.3681212-4-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Gwendal Grignou 2021-11-04 01:24:03 -07:00 committed by Jonathan Cameron
parent 9105079db6
commit 1aa2f96abb
1 changed files with 2 additions and 1 deletions
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3
drivers/iio/accel/mma7455_core.c
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@ -134,7 +134,8 @@ static int mma7455_read_raw(struct iio_dev *indio_dev,
if (ret)
return ret;
*val = sign_extend32(le16_to_cpu(data), 9);
*val = sign_extend32(le16_to_cpu(data),
chan->scan_type.realbits - 1);
return IIO_VAL_INT;