staging: iio: cdc: Remove explicit comparisons

Remove comparisons to 0 or NULL
Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/iio/cdc/ad7150.c

@@ -219,7 +219,7 @@ static int ad7150_write_event_config(struct iio_dev *indio_dev,
 	u64 event_code;
 
 	/* Something must always be turned on */
-	if (state == 0)
+	if (!state)
 		return -EINVAL;
 
 	event_code = IIO_UNMOD_EVENT_CODE(chan->type, chan->channel, type, dir);

drivers/staging/iio/cdc/ad7152.c

@@ -290,7 +290,7 @@ static int ad7152_write_raw(struct iio_dev *indio_dev,
 		ret = 0;
 		break;
 	case IIO_CHAN_INFO_SCALE:
-		if (val != 0) {
+		if (val) {
 			ret = -EINVAL;
 			goto out;
 		}