diff options
| author | Dan Carpenter | 2024-02-22 09:15:37 +0300 |
|---|---|---|
| committer | Jonathan Cameron | 2024-02-28 19:26:36 +0000 |
| commit | df621530462c681641425cfb416e411ff04b474a (patch) | |
| tree | 6053ce0620e65a9285f1776904f5db716cd97d2c /drivers | |
| parent | debabbb1f272f6c21b468838a0cbafc5d2c90e8b (diff) | |
iio: adc: ti-ads1298: prevent divide by zero in ads1298_set_samp_freq()
The "val" variable comes from the user so we need to ensure that it's not
zero. In fact, all negative values are invalid as well. Add a check for
that.
Fixes: 00ef7708fa60 ("iio: adc: ti-ads1298: Add driver")
Acked-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/c32c9087-86de-423b-8101-67b4a7f9d728@moroto.mountain
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/adc/ti-ads1298.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/adc/ti-ads1298.c b/drivers/iio/adc/ti-ads1298.c index 67637f1abdc7..1d1eaba3d6d1 100644 --- a/drivers/iio/adc/ti-ads1298.c +++ b/drivers/iio/adc/ti-ads1298.c @@ -258,6 +258,8 @@ static int ads1298_set_samp_freq(struct ads1298_private *priv, int val) rate = ADS1298_CLK_RATE_HZ; if (!rate) return -EINVAL; + if (val <= 0) + return -EINVAL; factor = (rate >> ADS1298_SHIFT_DR_HR) / val; if (factor >= BIT(ADS1298_SHIFT_DR_LP)) |