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iio: temperature: max31856: fix uninitialized error return

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Currently if mask is neither CHAN_INFO_RAW or CHAN_INFO_SCALE then
then an uninitialized error return 'ret' is returned. Fix this by
adding a default case that ensures -EINVAL is returned for this
specific case.

Addresses-Coverity: ("Uninitialized scalar variable")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Colin Ian King 2019-04-10 19:23:51 +01:00 committed by Jonathan Cameron
parent 631bd2f7ec
commit 8e4fefec01
1 changed files with 3 additions and 0 deletions
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3
drivers/iio/temperature/max31856.c
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@ -210,6 +210,9 @@ static int max31856_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT_PLUS_MICRO;
}
break;
default:
ret = -EINVAL;
break;
}
return ret;