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iio: chemical: sps30: Explicity truncate constant by masking 

When breaking up a constant to write to two 8 bit registers
it isn't obvious to sparse that it was intentional.

CHECK   drivers/iio/chemical/sps30.c
drivers/iio/chemical/sps30.c:120:30: warning: cast truncates bits from constant value (8004 becomes 4)

So in the interests of minimising noisy warnings, let us add
a mask.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Tomasz Duszynski <tduszyns@gmail.com>
This commit is contained in:
Jonathan Cameron 2019-10-13 10:55:15 +01:00
parent 47f3b26e70
commit 78b75ab3f8
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/chemical/sps30.c
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@ -117,7 +117,7 @@ static int sps30_do_cmd(struct sps30_state *state, u16 cmd, u8 *data, int size)
break; break;
case SPS30_READ_AUTO_CLEANING_PERIOD: case SPS30_READ_AUTO_CLEANING_PERIOD:
buf[0] = SPS30_AUTO_CLEANING_PERIOD >> 8; buf[0] = SPS30_AUTO_CLEANING_PERIOD >> 8;
buf[1] = (u8)SPS30_AUTO_CLEANING_PERIOD; buf[1] = (u8)(SPS30_AUTO_CLEANING_PERIOD & 0xff);
/* fall through */ /* fall through */
case SPS30_READ_DATA_READY_FLAG: case SPS30_READ_DATA_READY_FLAG:
case SPS30_READ_DATA: case SPS30_READ_DATA: