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iio: dpot-dac: mark expected switch fall-through with text GCC expects.

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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 the specific string "fall through", which is what GCC is
expecting to find thus supressing this false positive.

As Peter has observed this breaks the nice English flow, which is
less than ideal, but short of teaching GCC to read English, there
isn't a lot that we can do about it.

Addresses-Coverity-ID: 1462408 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Gustavo A. R. Silva 2018-10-08 19:35:28 +02:00 committed by Jonathan Cameron
parent 5c93f3ce98
commit c65a0d84ee
1 changed files with 2 additions and 2 deletions
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4
drivers/iio/dac/dpot-dac.c
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@ -74,11 +74,11 @@ static int dpot_dac_read_raw(struct iio_dev *indio_dev,
case IIO_VAL_INT: case IIO_VAL_INT:
/* /*
* Convert integer scale to fractional scale by * Convert integer scale to fractional scale by
* setting the denominator (val2) to one... * setting the denominator (val2) to one, and...
*/ */
*val2 = 1; *val2 = 1;
ret = IIO_VAL_FRACTIONAL; ret = IIO_VAL_FRACTIONAL;
/* ...and fall through. */ /* fall through */
case IIO_VAL_FRACTIONAL: case IIO_VAL_FRACTIONAL:
*val *= regulator_get_voltage(dac->vref) / 1000; *val *= regulator_get_voltage(dac->vref) / 1000;
*val2 *= dac->max_ohms; *val2 *= dac->max_ohms;