iio:chemical:sps30 Supress some switch fallthrough warnings.

Fixes warnings reported on linux-next but marking one path and adding an explicit return in the other. Signed-off-by: Jonathan Cameron <[email protected]> Cc: Andreas Brauchli <[email protected]> Acked-by: Tomasz Duszynski <[email protected]>
eeeeyoung · Feb 11, 2019 · 59b9bb0 · 59b9bb0
1 parent 4305834
commit 59b9bb0
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/iio/chemical/sps30.c b/drivers/iio/chemical/sps30.c
@@ -118,6 +118,7 @@ static int sps30_do_cmd(struct sps30_state *state, u16 cmd, u8 *data, int size)
 	case SPS30_READ_AUTO_CLEANING_PERIOD:
 		buf[0] = SPS30_AUTO_CLEANING_PERIOD >> 8;
 		buf[1] = (u8)SPS30_AUTO_CLEANING_PERIOD;
+		/* fall through */
 	case SPS30_READ_DATA_READY_FLAG:
 	case SPS30_READ_DATA:
 	case SPS30_READ_SERIAL:
@@ -295,6 +296,8 @@ static int sps30_read_raw(struct iio_dev *indio_dev,
 				*val2 = 10000;
 
 				return IIO_VAL_INT_PLUS_MICRO;
+			default:
+				return -EINVAL;
 			}
 		default:
 			return -EINVAL;