From 4e63ed6b90803eeb400c392e9ff493200d926b06 Mon Sep 17 00:00:00 2001 From: Tomer Maimon Date: Sun, 7 Apr 2019 11:19:28 +0300 Subject: [PATCH] iio: adc: modify NPCM ADC read reference voltage 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 Cc: Signed-off-by: Jonathan Cameron --- 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 9e25bbe..193b3b8 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 { -- 2.7.4