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staging:iio:adxrs450: Perform sign extension for the calibbias register 

The calibbias (DNC) register contains a 10-bit twos complement value. Perform a
proper sign extension when reading the register, otherwise negative will
incorrectly be displayed as large positive values.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
hifive-unleashed-5.1
Lars-Peter Clausen 2013-01-31 14:27:00 +00:00 committed by Jonathan Cameron
parent 1a87e4fba6
commit c62b89c713
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/iio/gyro/adxrs450_core.c
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@ -326,7 +326,7 @@ static int adxrs450_read_raw(struct iio_dev *indio_dev,
ret = adxrs450_spi_read_reg_16(indio_dev, ADXRS450_DNC1, &t);
if (ret)
break;
*val = t;
*val = sign_extend32(t, 9);
ret = IIO_VAL_INT;
break;
default: