Staging: iio: adis16209: Use GENMASK

Use GENMASK to improve readability and remove the local
variables used to store intermediate data.
Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/staging/iio/accel/adis16209.c

@@ -112,25 +112,22 @@ static int adis16209_write_raw(struct iio_dev *indio_dev,
 			       long mask)
 {
 	struct adis *st = iio_priv(indio_dev);
-	int bits;
-	s16 val16;
-	u8 addr;
+	int m;
+
+	if (mask != IIO_CHAN_INFO_CALIBBIAS)
+		return -EINVAL;
 
-	switch (mask) {
-	case IIO_CHAN_INFO_CALIBBIAS:
 	switch (chan->type) {
 	case IIO_ACCEL:
 	case IIO_INCLI:
-			bits = 14;
+		m = GENMASK(13, 0);
 		break;
 	default:
 		return -EINVAL;
 	}
-		val16 = val & ((1 << bits) - 1);
-		addr = adis16209_addresses[chan->scan_index][0];
-		return adis_write_reg_16(st, addr, val16);
-	}
-	return -EINVAL;
+
+	return adis_write_reg_16(st, adis16209_addresses[chan->scan_index][0],
+				 val & m);
 }
 
 static int adis16209_read_raw(struct iio_dev *indio_dev,