[5.19,591/717] hwmon: (sht4x) do not overflow clamping operation on 32-bit platforms
Commit Message
Greg KH
Oct. 22, 2022, 7:27 a.m. UTC
From: Jason A. Donenfeld <Jason@zx2c4.com> [ Upstream commit f9c0cf8f26de367c58e48b02b1cdb9c377626e6f ] On 32-bit platforms, long is 32 bits, so (long)UINT_MAX is less than (long)SHT4X_MIN_POLL_INTERVAL, which means the clamping operation is bogus. Fix this by clamping at INT_MAX, so that the upperbound is the same on all platforms. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20220924101151.4168414-1-Jason@zx2c4.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/hwmon/sht4x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/sht4x.c b/drivers/hwmon/sht4x.c index c19df3ade48e..13ac2d8f22c7 100644 --- a/drivers/hwmon/sht4x.c +++ b/drivers/hwmon/sht4x.c @@ -129,7 +129,7 @@ static int sht4x_read_values(struct sht4x_data *data) static ssize_t sht4x_interval_write(struct sht4x_data *data, long val) { - data->update_interval = clamp_val(val, SHT4X_MIN_POLL_INTERVAL, UINT_MAX); + data->update_interval = clamp_val(val, SHT4X_MIN_POLL_INTERVAL, INT_MAX); return 0; }