[PATCH v1] iio: adc: modify NPCM ADC read reference voltage

[Tomer Maimon]

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 <tmaimo...@gmail.com>
---
 drivers/iio/adc/npcm_adc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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 {
-- 
2.14.1