diff options
| author | Tomer Maimon <tmaimon77@gmail.com> | 2019-04-07 11:19:28 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-09 10:16:10 +0300 |
| commit | fb304841e95845ad131b6762ed2231c4302f8743 (patch) | |
| tree | 03b25d604a39d4ef95d8518e60c2f506aa4b90ea /drivers/iio | |
| parent | 6b84e38b700bf6c8f4e983ba1e6c01d8b16bf581 (diff) | |
| download | linux-fb304841e95845ad131b6762ed2231c4302f8743.tar.xz | |
iio: adc: modify NPCM ADC read reference voltage
commit 4e63ed6b90803eeb400c392e9ff493200d926b06 upstream.
Checking if regulator is valid before reading
NPCM ADC regulator voltage to avoid system crash
in a case the regulator is not valid.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/npcm_adc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/npcm_adc.c b/drivers/iio/adc/npcm_adc.c index 9e25bbec9c70..193b3b81de4d 100644 --- a/drivers/iio/adc/npcm_adc.c +++ b/drivers/iio/adc/npcm_adc.c @@ -149,7 +149,7 @@ static int npcm_adc_read_raw(struct iio_dev *indio_dev, } return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: - if (info->vref) { + if (!IS_ERR(info->vref)) { vref_uv = regulator_get_voltage(info->vref); *val = vref_uv / 1000; } else { |