Staging: iio: adc: Remove explicit NULL comparison

---
 drivers/staging/iio/adc/ad7606_ring.c | 2 +-
 drivers/staging/iio/adc/ad7780.c      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
 
diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c
index 3bf174c..a6f8eb1 100644
--- a/drivers/staging/iio/adc/ad7606_ring.c
+++ b/drivers/staging/iio/adc/ad7606_ring.c
@@ -50,7 +50,7 @@ static void ad7606_poll_bh_to_ring(struct work_struct *work_s)
 	int ret;
 
 	buf = kzalloc(indio_dev->scan_bytes, GFP_KERNEL);
-	if (buf == NULL)
+	if (!buf)
 		return;
 
 	if (gpio_is_valid(st->pdata->gpio_frstdata)) {
diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c
index 66a157b..9f03fe3 100644
--- a/drivers/staging/iio/adc/ad7780.c
+++ b/drivers/staging/iio/adc/ad7780.c
@@ -169,7 +169,7 @@ static int ad7780_probe(struct spi_device *spi)
 	int ret, voltage_uv = 0;
 
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
-	if (indio_dev == NULL)
+	if (!indio_dev)
 		return -ENOMEM;
 
 	st = iio_priv(indio_dev);