diff options
Diffstat (limited to 'drivers/iio/accel/mma9553.c')
| -rw-r--r-- | drivers/iio/accel/mma9553.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c index 1a25605..365a109 100644 --- a/drivers/iio/accel/mma9553.c +++ b/drivers/iio/accel/mma9553.c @@ -54,6 +54,7 @@ #define MMA9553_MASK_CONF_STEPCOALESCE GENMASK(7, 0) #define MMA9553_REG_CONF_ACTTHD 0x0E +#define MMA9553_MAX_ACTTHD GENMASK(15, 0) /* Pedometer status registers (R-only) */ #define MMA9553_REG_STATUS 0x00 @@ -869,6 +870,9 @@ static int mma9553_write_event_value(struct iio_dev *indio_dev, case IIO_EV_INFO_PERIOD: switch (chan->type) { case IIO_ACTIVITY: + if (val < 0 || val > MMA9553_ACTIVITY_THD_TO_SEC( + MMA9553_MAX_ACTTHD)) + return -EINVAL; mutex_lock(&data->mutex); ret = mma9553_set_config(data, MMA9553_REG_CONF_ACTTHD, &data->conf.actthd, |
