[PATCH 2/2] iio: adc: ad7298: check regulator for null in ad7298_get_ref_voltage()

[Alexandru Ardelean]

'st->ext_ref' & 'st->reg' are both non-zero/non-null at the same time, so
logically the code isn't broken.
But it is more correct to check that 'st->reg' is non-null, since we make
sure that the regulator is NULL (in probe) in case one isn't defined.

Cc: Colin Ian King <colin.k...@canonical.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardel...@analog.com>
---
 drivers/iio/adc/ad7298.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
index ecdb01bd5b2f..689ecd5dd563 100644
--- a/drivers/iio/adc/ad7298.c
+++ b/drivers/iio/adc/ad7298.c
@@ -214,7 +214,7 @@ static int ad7298_get_ref_voltage(struct ad7298_state *st)
 {
        int vref;
 
-       if (st->ext_ref) {
+       if (st->reg) {
                vref = regulator_get_voltage(st->reg);
                if (vref < 0)
                        return vref;
-- 
2.27.0