linux-kernel - [PATCH] iio: dpot-dac: mark expected switch fall-through

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Message-ID: <20181008173528.GA31787@embeddedor.com>
Date:   Mon, 8 Oct 2018 19:35:28 +0200
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Peter Rosin <peda@...ntia.se>, Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH] iio: dpot-dac: mark expected switch fall-through

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that in this particular case, I replaced "...and fall through."
with a proper "fall through", which is what GCC is expecting to find.

Addresses-Coverity-ID: 1462408 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
 drivers/iio/dac/dpot-dac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/dac/dpot-dac.c b/drivers/iio/dac/dpot-dac.c
index a791d0a..e353946 100644
--- a/drivers/iio/dac/dpot-dac.c
+++ b/drivers/iio/dac/dpot-dac.c
@@ -78,7 +78,7 @@ static int dpot_dac_read_raw(struct iio_dev *indio_dev,
 			 */
 			*val2 = 1;
 			ret = IIO_VAL_FRACTIONAL;
-			/* ...and fall through. */
+			/* fall through */
 		case IIO_VAL_FRACTIONAL:
 			*val *= regulator_get_voltage(dac->vref) / 1000;
 			*val2 *= dac->max_ohms;
-- 
2.7.4