diff options
| author | Thomas Haemmerle <thomas.haemmerle@leica-geosystems.com> | 2024-04-15 13:50:27 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-04-20 16:53:01 +0300 |
| commit | 9dd6b32e76ff714308964cd9ec91466a343dcb8b (patch) | |
| tree | 6641463b6763a878a9f8725094e55c3d31b91f7a /drivers/iio/pressure/dps310.c | |
| parent | 499eb311513fa30e136d01abfb316c482379afa1 (diff) | |
| download | linux-9dd6b32e76ff714308964cd9ec91466a343dcb8b.tar.xz | |
iio: pressure: dps310: support negative temperature values
The current implementation interprets negative values returned from
`dps310_calculate_temp` as error codes.
This has a side effect that when negative temperature values are
calculated, they are interpreted as error.
Fix this by using the return value only for error handling and passing a
pointer for the value.
Fixes: ba6ec48e76bc ("iio: Add driver for Infineon DPS310")
Signed-off-by: Thomas Haemmerle <thomas.haemmerle@leica-geosystems.com>
Link: https://lore.kernel.org/r/20240415105030.1161770-2-thomas.haemmerle@leica-geosystems.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/pressure/dps310.c')
| -rw-r--r-- | drivers/iio/pressure/dps310.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c index 1ff091b2f764..d0a516d56da4 100644 --- a/drivers/iio/pressure/dps310.c +++ b/drivers/iio/pressure/dps310.c @@ -730,7 +730,7 @@ static int dps310_read_pressure(struct dps310_data *data, int *val, int *val2, } } -static int dps310_calculate_temp(struct dps310_data *data) +static int dps310_calculate_temp(struct dps310_data *data, int *val) { s64 c0; s64 t; @@ -746,7 +746,9 @@ static int dps310_calculate_temp(struct dps310_data *data) t = c0 + ((s64)data->temp_raw * (s64)data->c1); /* Convert to milliCelsius and scale the temperature */ - return (int)div_s64(t * 1000LL, kt); + *val = (int)div_s64(t * 1000LL, kt); + + return 0; } static int dps310_read_temp(struct dps310_data *data, int *val, int *val2, @@ -768,11 +770,10 @@ static int dps310_read_temp(struct dps310_data *data, int *val, int *val2, if (rc) return rc; - rc = dps310_calculate_temp(data); - if (rc < 0) + rc = dps310_calculate_temp(data, val); + if (rc) return rc; - *val = rc; return IIO_VAL_INT; case IIO_CHAN_INFO_OVERSAMPLING_RATIO: |