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iio: accel: mma8452: define unsigned return values where appropriate

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smatch warned:
	sval_binop_signed: invalid divide LLONG_MIN/-1

and this fixes it. It's actually good to have, in order to avoid accidental
checking for negative return values here.

Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Martin Kepplinger 2016-11-21 20:53:54 +01:00 committed by Jonathan Cameron
parent 25fc503e2d
commit 32b2807680
1 changed files with 2 additions and 2 deletions
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4
drivers/iio/accel/mma8452.c
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@ -248,7 +248,7 @@ static int mma8452_get_int_plus_micros_index(const int (*vals)[2], int n,
return -EINVAL;
}
static int mma8452_get_odr_index(struct mma8452_data *data)
static unsigned int mma8452_get_odr_index(struct mma8452_data *data)
{
return (data->ctrl_reg1 & MMA8452_CTRL_DR_MASK) >>
MMA8452_CTRL_DR_SHIFT;
@ -260,7 +260,7 @@ static const int mma8452_samp_freq[8][2] = {
};
/* Datasheet table: step time "Relationship with the ODR" (sample frequency) */
static const int mma8452_transient_time_step_us[4][8] = {
static const unsigned int mma8452_transient_time_step_us[4][8] = {
{ 1250, 2500, 5000, 10000, 20000, 20000, 20000, 20000 }, /* normal */
{ 1250, 2500, 5000, 10000, 20000, 80000, 80000, 80000 }, /* l p l n */
{ 1250, 2500, 2500, 2500, 2500, 2500, 2500, 2500 }, /* high res*/