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| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2021-03-29 23:58:17 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-04-07 10:36:39 +0300 |
| commit | c10f8109f78b4e3722003c923e6aeebc73a6134a (patch) | |
| tree | 45e9d4c687d4eda1652189b8448b30ef15140f01 /drivers/iio/trigger | |
| parent | 4d84487d963164bf661deff86eaca3d6a789e9cf (diff) | |
| download | linux-c10f8109f78b4e3722003c923e6aeebc73a6134a.tar.xz | |
iio: hrtimer-trigger: Fix potential integer overflow in iio_hrtimer_store_sampling_frequency
Add suffix ULL to constant 1000 in order to avoid a potential integer
overflow and give the compiler complete information about the proper
arithmetic to use. Notice that this constant is being used in a context
that expects an expression of type unsigned long long, but it's
currently evaluated using 32-bit arithmetic.
Addresses-Coverity-ID: 1503062 ("Unintentional integer overflow")
Fixes: dafcf4ed8392 ("iio: hrtimer: Allow sub Hz granularity")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20210329205817.GA188755@embeddedor
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/trigger')
| -rw-r--r-- | drivers/iio/trigger/iio-trig-hrtimer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/trigger/iio-trig-hrtimer.c b/drivers/iio/trigger/iio-trig-hrtimer.c index 51e362f091c2..716c795d08fb 100644 --- a/drivers/iio/trigger/iio-trig-hrtimer.c +++ b/drivers/iio/trigger/iio-trig-hrtimer.c @@ -63,7 +63,7 @@ ssize_t iio_hrtimer_store_sampling_frequency(struct device *dev, if (integer < 0 || fract < 0) return -ERANGE; - val = fract + 1000 * integer; /* mHz */ + val = fract + 1000ULL * integer; /* mHz */ if (!val || val > UINT_MAX) return -EINVAL; |