diff options
| author | Song Hongyan <hongyan.song@intel.com> | 2016-11-03 01:45:48 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-11-05 17:25:33 +0100 |
| commit | ab54163190f236e30772e6e8b4efc56a319ed0a6 (patch) | |
| tree | e367d162de3d6f512ceeca4626dbaa50d370c93a /drivers/iio | |
| parent | staging: iio: ad9832: clean-up regulator 'reg' (diff) | |
| download | linux-ab54163190f236e30772e6e8b4efc56a319ed0a6.tar.xz linux-ab54163190f236e30772e6e8b4efc56a319ed0a6.zip | |
iio: hid-sensor-attributes: Check sample_frequency/hysteresis write data legitimacy
Neither sample frequency value nor hysteresis value can be set to be a
negative number, check and return "Invalid argument" if they are negative.
If not do this change, sample_frequency will be set into some unknown
value, read hysteresis value after write negative number will return
"Invalid argument".
Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/common/hid-sensors/hid-sensor-attributes.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c index dc33c1dd5191..4509f8475c54 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c +++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c @@ -201,7 +201,7 @@ int hid_sensor_write_samp_freq_value(struct hid_sensor_common *st, int ret; if (val1 < 0 || val2 < 0) - ret = -EINVAL; + return -EINVAL; value = val1 * pow_10(6) + val2; if (value) { @@ -250,6 +250,9 @@ int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st, s32 value; int ret; + if (val1 < 0 || val2 < 0) + return -EINVAL; + value = convert_to_vtf_format(st->sensitivity.size, st->sensitivity.unit_expo, val1, val2); |