Expression with two unsigned integer variables is calculated as unsigned integer before it is converted to u64. This may result in an integer overflow. Fix by typecasting the left operand to u64 before performing the left shift. This patch addresses Coverity #402320: Unintentional integer overflow. Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> --- drivers/hwmon/fam15h_power.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c index 6b13f1a..2764b78 100644 --- a/drivers/hwmon/fam15h_power.c +++ b/drivers/hwmon/fam15h_power.c @@ -67,7 +67,8 @@ static ssize_t show_power(struct device *dev, REG_TDP_LIMIT3, &val); tdp_limit = val >> 16; - curr_pwr_watts = (tdp_limit + data->base_tdp) << running_avg_range; + curr_pwr_watts = ((u64)(tdp_limit + + data->base_tdp)) << running_avg_range; curr_pwr_watts -= running_avg_capture; curr_pwr_watts *= data->tdp_to_watts; -- 1.7.9.7 _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
